Animal Physiology, Tissue (50+50+50+MCQs)
MCQs on Different Types Of Tissue
A) 3
B) 8
C) 5
D) 4
Ans - D
2) Which of the following is epithelial tissue?
A) Connective tissue
B) covering lining epithelium tissue
C) Granular epithelial tissue
D) Option B & C
Ans - D
3) Which of the following is the function of epithelial tissue?
A) Cell layer
B) Cell shape
C) To provide support and structure to the body
D) Option A & B
Ans - D
4) Which of the following is the function of epithelial tissue?
A) Protection
B) Absorption, Diffusion
C) Secretion, Excretion, Filtration
D) All of the above
Ans - D
5) Which of the following is the example of epithelial tissue which is help in cell layering of the tissue?
A) Squamous epithelium
B) Stratified epithelium
C) Cuboidal epithelium
D) Columnar epithelium
Ans - B
6) Example of cell layering epithelial tissue?
A) Simple epithelium
B) Pseudostratified epithelium
C) Stratified epithelium
D) All of the above
Ann's - D
7) Epithelial tissue provide cell shape of the tissue?
A) Squamous epithelium
B) Option A, C and D
C) Cuboidal epithelium
D) Columnar epithelium
Ans - B
8) Groups of similar cells with shared functions called?
A) Heart
B) Tissue
C) Brain cells
D) Muscles
Ans - B
9) What is the function of Covering lining epithelium tissue?
A) Filtration of the substances
B) Formation of cell layer
C) Formation of cell shape
D) All of the above
Ans - D
10) Basement membrane is found between?
A) Two epithelial cells
B) Epithelial tissue and nerves tissue
C) Epithelial tissue and connective tissue
D) All of the above
Ans - C
11) Which of the following is incorrect about epithelial tissue?
A) Epithelial tissue forms body membranes and glands.
B) Cells are tightly packed with few intercellular spaces.
C) Epithelial tissue lacks its own blood supply or avascular.
D) Low capacity for renewal.
Ans - D
12) Outer covering of skin and some internal organs made up of?
A) Nervous tissue
B) Epithelial tissue
C) Connective tissue
D) Muscular tissue
Ans - B
13) Which of the following covering epithelial tissue consists of two or more cell layers?
A) Simple epithelium
B) Pseudostratified epithelium
C) Stratified epithelium
D) All of the above
Ans - C
14) Which of the following is arranged in single layer but appears multilead with nuclei at different levels?
A) Simple epithelium
B) Pseudostratified epithelium
C) Stratified epithelium
D) Squamous epithelium
Ans - B
15) Which of the following appears as tall as they are wide resembling cubes or hexagons?
A) Pseudostratified epithelium
B) Stratified epithelium
C) Squamous epithelium
D) Cuboidal cell
Ans - A
16) Thin and arranged like floor tiles?
A) Columnar cells
B) Stratified cells
C) Squamous cells
D) Cuboidal cells
Ans - C
17) Which of the following statement about Simple Squamous epithelium is False?
A) Locatin in cardiovascular and lymphatic system ( heart, blood vessels, lymphatic vessels) known as endothelium.
B) Forms the epithelial layer of serous membrane (peritoneum, pleura, pericardium) called mesothelium.
C) Found in air sacs of lungs.
D) Not present in glomerular (Bowman's) capsule of kidneys.
Ans - D
18) Function of Simple Cuboidal epithelium?
A) Secretion and absorption
B) Filtration and diffusion
C) Support and protection
D) Only absorption
Ans - A
19) Which of the following statement about Simple Cuboidal Epithelium is incorrect?
A) Covers surface of overy
B) Lines anterior surface of capsule of lens of the eye.
C) Forms pigmented epithelium at posterior surface of retina of the eye
D) NOT all of the above
Ans - D
20) Which of the following statement is true about Nonciliated Simple Columnar Epithelium cells?
A) Oval nuclei near base of the cells.
B) Round nuclei near apex of the cell.
C) Present microvilli at apical surface and goblet cells.
D) Option A & C.
Ans - D
21) False statement about microvilli?
A) Microvilli are involved in the movement of substances.
B) Increase the surface area for absorption of nutrients.
C) Increasing cells rate of absorption.
D) Found on the surface of non ciliated epithelium cells m
Ans - A
22) Modified Columnar Epithelial cells that secrete mucus called?
A) Microvilli
B) Ciliated cells
C) Goblet cells
D) Bowman's capsule
Ans - C
23) Which of the following is the function of Goblet cells?
A) Secretion and absorption
B) Helps prevent destruction of stomach lining by acidic gastric juice secreted by stomach.
C) Secreted mucus lubricates things of digestive, respiratory and reproductive tract and the urinary tract.
D) All of the above.
Ans - D
24) Incorrect statment about Goblet cells are found in?
A) Lines gastrointestinal tract ( stomach to anus)
B) Ducts of gallbladder
C) Reproductive tract
D) Brain
Ans - D
25) Which of following specialized cell present in the line of some bronchioles, urinary (fallopian) tubes, uterus and Central canal of spinal cord and ventricles of brain?
A) Goblet cells
B) Nonciliated Simple Columnar cells
C) Ciliated Simple Columnar cells
D) All of the above
Ans - C
26 ) Which of the following help move to oocyte expelled from ovaries through fallopian tubes?
A) Cilia on the surface of endometrium
B) Muscular contraction of ovarian ligaments
C) Cilia on the surface of fallopian tubes ( Ciliated Simple Columnar Epithelium)
D) Peristaltic contractions of uterine muscles
Ans - C
27) Nuclei of the cells are at various levels of?
A) Simple epithelium
B) Pseudostratified epithelium
C) Stratified epithelium
D) All of the above
Ans - B
NOTE - Function of Nonciliated Pseudostratified Columnar Epithelium are absorption and secretion.
28) Location of Ciliated Pseudostratified Columnar epithelium in the?
A) Lines airways of most upper respiratory tract
B) Lines the digestive tract
C) Lines the urinary tract
D) Lines the blood vessels
Ans - A
29) Which of the following statement is incorrect about stratified squamous epithelium?
A) Keratinized stratified squamous epithelium develop tough layer of Karetin in apical layer of cells
B) Nonkeratinized lines wet surfaces ( lining of mouth, esophagus, part of epiglottis, part of pharynx and vagina) and covers tounge
C) Do not against abrasion
D) Protact water loss, ultraviolet radiation, and foreign invasion
Ans - C
30) Ducts of sweat glands are made of the?
A) Stratified squamous epithelium
B) Stratified cuboidal epithelium
C) Pseudostratified Columnar epithelium
D) Stratified epithelium
Ans - B
31) Which of the following is currect about Stratified cuboidal epithelium?
A) Limited secretion and absorption
B) Found in adult sweat glands, esophageal glands and male urethra
C) Cube shaped cells
D) All of the above
Ans - D
32) Transitional epithelium is also known as?
A) Transverse epithelium
B) Middle layer of Epithelium
C) Urothelium
D) All of the Above
Ans - C
33) Which of the following is incorrect about Transitional epithelium?
A) Variable appearance
B) Found in the urinary bladder and portion of ureters and urethra
C) In relaxed or stretched state
D) Don't allow urinary organs to stretch
Ans - D
34) Secretions (hormones) that diffuse into bloodstream without flowing through a duct called?
A) Endocrine glands
B) Exocrine glands
35) Not an example of endocrine gland?
A) Pituitary gland
B) Earwax gland of skin
C) Pineal gland
D) Thyroid gland and parathyroid gland
Ans - B
36) Adrenal gland is an endocrine gland?
T/F
Ans - True
37) Sweat gland and salivary gland are the examples of endocrine gland? T/F
Ans - False
38) How many types of simple Exocrine glands?
A) 6
B) 4
C) 8
D) 5
Ans - D
39) Ductless gland also known as endocrine gland? T/F
Ans - True
NOTE - Type of Exocrine glands
1 Simple tubular - Glands in the large intestine
2 Simple Branched tubular - Gastric glands
3 Simple coiled tubular - Sweat glands
4 Simple acinar - Glands of penile urethra
5 Simple branched acinar - Sebaceous glands
40) Which of the following statement is incorrect about Compound Exocrine glands?
A) They have a duct system that transports secretions away from the gland
B) They have multiple lobes and a complex duct system
C) They are simple tubular glands with a single duct
D) They produce both enzymes and hormones
Ans - C
41) Mammary glands are the example of compound exocrine glands?
A) Compund tubular
B) Compund acinar
C) Compund tubulo-acinar
D) Simple acinar
Ans - C
42) Secretory products are released into ducts in _____ Endocrine / Exocrine glands
Ans - Exocrine glands
43) What is the function of bulbourethral (Cowper's) glands?
A) To produce semen
B) To produce a lubricating fluid for the urethra
C) To produce testosterone
D) To produce prostate-specific antigen
Ans - B
44) Where are the bulbourethral (Cowper's) glands located?
A) In the prostate gland
B) In the testes
C) In the scrotum
D) In the deep perineal pouch
Ans - D
45) What is the secretory product of bulbourethral (Cowper's) glands called?
A) Semen
B) Prostatic fluid
C) Pre-ejaculate fluid
D) Testicular fluid
Ans - C
46) What is the role of bulbourethral (Cowper's) glands in the male reproductive system?
A) To aid in sperm production
B) To aid in ejaculation
C) To lubricate the urethra during sexual intercourse
D) To produce hormones that regulate sperm production
Ans - C
47) Bulbourethral (Cowper's) glands is an example of?
A) Compund tubular / Simple tubular
B) Compund acinar
C) Compund tubulo-acinar
D) Simple acinar
Ans - A
FACT - Bulbourethral (Cowper's) glands are found only in males.
48) Most exocrine glands of the body are?
A) Merocrine glands
B) Apocrine glands
C) Holocrine glands
D) All of the above
Ans - A
49) Which of the following statement is incorrect about Exocrine secretions in the body?
A) Synthesized on ribosomes attached to ER
B) Processed, stored, and packaged by Golgy complex
C) Released from the cell in secretory vesicles via exocytosis
D) Most of the exocrine glands are Holocrine glands
Ans - D
50) What is the characteristic feature of Holocrine glands?
A) Release of secretions through exocytosis
B) Release of entire cell contents into the duct
C) Storage of secretions in vesicles
D) Secretion of hormones into the bloodstream
Ans - B
1) Which of the following is an example of a Holocrine gland?
A) Salivary gland
B) Pancreas
C) Sebaceous gland
D) Sweat gland
Ans - C
2) How do Holocrine glands release their secretions?
A) Through exocytosis
B) Through apocrine secretion
C) By releasing the entire cell
D) Through merocrine secretion
Ans - C
3) What is the result of Holocrine gland secretion?
A) Release of hormones into the bloodstream
B) Release of digestive enzymes into the gut
C) Formation of a layer of sebum on the skin
D) Stimulation of muscle contraction
Ans - C
4) Example of an Apocrine glands?
A) Secretion of milk fat in the mammary glands
B) Secretion of sweat in the eccrine glands
C) Secretion of sebum in the sebaceous glands
D) Secretion of digestive enzymes in the pancreas
Ans - A
5) What is the characteristic feature of Apocrine glands?
A) Release of entire cell contents into the duct
B) Release of secretions through exocytosis
C) Pinching off a portion of the cell membrane to release secretions
D) Storage of secretions in vesicles
Ans - C
6) Which of the following is an example of an Apocrine gland?
A) Sebaceous gland
B) Eccrine gland
C) Mammary gland
D) Pancreas
Ans - C
7) How do Apocrine glands release their secretions?
A) Through holocrine secretion
B) Through merocrine secretion
C) By pinching off a portion of the cell membrane
D) Through endocytosis
Ans - C
8) Apocrine glands are typically found in which of the following locations?
A) Skin, particularly in the axillary and genital regions
B) Digestive tract
C) Respiratory tract
D) Urinary tract
Ans - A
9) Which of the following is unknown as a mix gland?
A) Salivary gland
B) Pancreas
C) Liver
D) Thyroid gland
Ans - B
10) All of the following are currect except?
A) Release secretory vesicles via exocytosis - Merocrine secretion
B) Cell surfaces pinching off by exocytosis - Apocrine secretion
C) Complete cell repture and become secretary product - Holocrine secretion
D) All of the above are examples of endocrine system
Ans - D
11) A. Merocrine secretion - ______
Salivary gland and pancreas
B. Apocrine secretion - ______
Secretion of milk fat in the mammary glands
C. Holocrine secretion - ______
Sebaceous gland of the skin
MUSCULAR TISSUES :-
12) Origin of musclur tissue?
A) Ectodermic
B) Mesoderm
C) Endoderm
D) Mesoectoderm
Ans - B
13) Myocytes also known as?
A) Muscle
B) Mucus membrane
C) Muscle fibres
D) Skeletal muscle
Ans - C
14) Which of the following is not a Muscular Tissue?
A) Squamous epithelium tissue
B) Skeletal Tissue
C) Cardiac Tissue
D) Smooth Tissue
Ans - A
15) Which of the following types of muscle tissue is responsible for voluntary movements?
A) Skeletal muscle
B) Smooth muscle
C) Cardiac muscle
D) Adipose tissue
Ans - A
16) Which type of muscle fiber is responsible for rapid, powerful contractions?
A) Fast-twitch fibers
B) Slow-twitch fibers
C) Intermediate fibers
D) Oxidative fibers
Ans - A
17) What is the primary function of the sarcoplasmic reticulum in muscle cells?
A) To synthesize proteins
B) To store calcium ions
C) To generate ATP
D) To regulate muscle contraction
Ans - B
18) Which of the following is a characteristic of smooth muscle tissue?
A) Striated appearance
B) Voluntary control
C) Involuntary control
D) High mitochondrial density
Ans - C
19) What is the term for the process by which muscle fibers increase in size?
A) Hypertrophy
B) Hyperplasia
C) Atrophy
D) Muscle fatigue
Ans - A) Hypertrophy
20) Which type of muscle tissue is found in the walls of hollow organs, such as the digestive tract?
A) Skeletal muscle
B) Smooth muscle
C) Cardiac muscle
D) Adipose tissue
Ans - B
21) What is the primary function of troponin in muscle contraction?
A) To bind to actin
B) To bind to myosin
C) To regulate calcium ion binding
D) To generate ATP
Ans - C
22) Which of the following is a characteristic of cardiac muscle tissue?
A) Striated appearance
B) Voluntary control
C) Involuntary control
D) Low mitochondrial density
Ans - A
23) What is the term for the process by which muscle fibers decrease in size?
A) Hypertrophy
B) Hyperplasia
C) Atrophy
D) Muscle fatigue
Ans - C
24) Which type of muscle fiber is responsible for slow, sustained contractions?
A) Fast-twitch fibers
B) Slow-twitch fibers
C) Intermediate fibers
D) Oxidative fibers
Ans - B
25) What is the primary function of myoglobin in muscle cells?
A) To store oxygen
B) To generate ATP
C) To regulate calcium ion binding
D) To bind to actin
Ans - A
26) Which of the following is a characteristic of skeletal muscle tissue?
A) Involuntary control
B) Voluntary control
C) Striated appearance
D) Low mitochondrial density
Ans - B
27) What is the term for the process by which muscle cells generate ATP?
A) Cellular respiration
B) Muscle contraction
C) Muscle relaxation
D) Glycolysis
Ans - A
28) Which type of muscle tissue is responsible for pumping blood throughout the body?
A) Skeletal muscle
B) Smooth muscle
C) Cardiac muscle
D) Adipose tissue
Ans - C
29) What is the primary function of the neuromuscular junction?
A) To transmit signals from neurons to muscle cells
B) To transmit signals from muscle cells to neurons
C) To regulate muscle contraction
D) To generate ATP
Ans - A
30) What is the shape of skeletal muscle fibers?
A) Branched
B) Unbranched
C) Circular
D) Oval
Ans - B
31) Where is the nucleus located in skeletal muscle fibers?
A) Center of the fiber
B) Periphery of the fiber
C) Throughout the fiber
D) Not present
Ans - B
32) What is the primary function of skeletal muscle tissue?
A) To pump blood
B) To digest food
C) To move the body
D) To regulate body temperature
Ans - C
33) Which of the following is a characteristic of skeletal muscle tissue?
A) Involuntary control
B) Voluntary control
C) Striated appearance
D) Option B & C
Ans - D
34) What is the name of the protein that makes up the majority of skeletal muscle tissue?
A) Actin
B) Myosin
C) Tropomyosin
D) Troponin
Ans - B
35) Which type of skeletal muscle fiber is responsible for rapid, powerful contractions?
A) Fast-twitch fibers
B) Slow-twitch fibers
C) Intermediate fibers
D) Oxidative fibers
Ans - A
36) Where are skeletal muscles located?
A) In the walls of hollow organs
B) In the skin
C) Attached to bones
D) In the digestive tract
Ans - C
37) Which of the following is a type of skeletal muscle fiber?
A) Red fibers
B) White fibers
C) Intermediate fibers
D) All of the above
Ans - D
38) What is the name of the tendon that attaches a skeletal muscle to a bone?
A) Aponeurosis
B) Fascia
C) Ligament
D) Tendon
Ans - D
39) Which of the following is a characteristic of fast-twitch skeletal muscle fibers?
A) High mitochondrial density
B) Low mitochondrial density
C) High capillary density
D) Low capillary density
Ans - B
40) What is the name of the protein that helps to regulate muscle contraction?
A) Tropomyosin
B) Troponin
C) Myosin
D) Actin
Ans - B
41) What is the name of the protein that helps to anchor the muscle fiber to the tendon?
A) Titin
B) Myosin
C) Actin
D) Tropomyosin
Ans - A)
42) Which of the following is a characteristic of slow-twitch skeletal muscle fibers?
A) High mitochondrial density
B) Low mitochondrial density
C) High capillary density
D) Low capillary density
Ans - A)
43) What is the name of the protein that helps to regulate muscle relaxation?
A) Tropomyosin
B) Troponin
C) Myosin
D) Actin
Ans - A
44) Which type of skeletal muscle fiber is responsible for endurance activities?
A) Fast-twitch fibers
B) Slow-twitch fibers
C) Intermediate fibers
D) Oxidative fibers
Ans - B
45) What is the function of the golgi apparatus in skeletal muscle fibers?
A) To synthesize proteins
B) To store calcium ions
C) To generate ATP
D) To modify proteins
Ans - D
46) What is the name of the protein that helps to anchor the muscle fiber to the Z-line?
A) Titin
B) Myosin
C) Actin
D) Tropomyosin
Ans - A
47) Which type of skeletal muscle fiber is responsible for generating rapid, powerful contractions?
A) Fast-twitch fibers
B) Slow-twitch fibers
C) Intermediate fibers
D) Oxidative fibers
Ans - A
48) What is the function of the sarcoplasm in skeletal muscle fibers?
A) To synthesize proteins
B) To store calcium ions
C) To generate ATP
D) To provide nutrients and oxygen to the muscle fiber
Ans - D
49) Which of the following is a characteristic of skeletal muscle tissue?
A) Involuntary control
B) Voluntary control
C) Striated appearance
D) All of the above
Ans - D
50) What is the name of the protein that helps to regulate muscle contraction and relaxation?
A) Tropomyosin
B) Troponin
C) Myosin
D) Actin
Ans - B
SARCOPLASM:-
1) What is the sarcoplasm?
A) The cytoplasm of a muscle fiber
B) The nucleus of a muscle fiber
C) The mitochondria of a muscle fiber
D) The golgi apparatus of a muscle fiber
Ans - A
2) What is the primary function of the sarcoplasm?
A) To synthesize proteins
B) To store calcium ions
C) To generate ATP
D) To provide nutrients and oxygen to the muscle fiber
Ans - D
3) Which of the following organelles is found in the sarcoplasm?
A) Mitochondria
B) Golgi apparatus
C) Lysosomes
D) All of the above
Ans - D
4) What is the term for the network of membranous tubules and sacs found in the sarcoplasm?
A) Sarcoplasmic reticulum
B) Endoplasmic reticulum
C) Golgi apparatus
D) Mitochondria
Ans - A
5) Which of the following is a characteristic of the sarcoplasm?
A) High concentration of myoglobin
B) High concentration of glycogen
C) High concentration of mitochondria
D) All of the above
Ans - D
6) Where is cardiac muscle tissue primarily found?
A) Skeletal system
B) Smooth muscle organs
C) Heart
D) Blood vessels
Ans - C
7) What is the main function of cardiac muscle tissue?
A) To facilitate movement
B) To regulate body temperature
C) To pump blood throughout the body
D) To aid in digestion
Ans - C
8) What type of muscle tissue is cardiac muscle?
A) Skeletal muscle
B) Smooth muscle
C) Striated muscle
D) Both 2 and 3
Ans - D
9) Which of the following is a characteristic of cardiac muscle tissue?
A) Voluntary control
B) Involuntary control
C) Striated appearance
D) Both 2 and 3
Ans - D
10) Cardiac muscle tissue is composed of which type of cells?
A) Skeletal muscle cells
B) Smooth muscle cells
C) Cardiomyocytes
D) Neurons
Ans - C
11) What is the name of the specialized cells that transmit electrical impulses in the heart?
A) Cardiomyocytes
B) Pacemaker cells
C) Purkinje fibers
D) Both 2 and 3
Ans - D
12) Where are the pacemaker cells located in the heart?
A) Sinoatrial (SA) node
B) Atrioventricular (AV) node
C) Bundle of His
D) Purkinje fibers
Ans - A
13) What is the function of the atrioventricular (AV) node?
A) To transmit electrical impulses from the SA node to the ventricles
B) To delay electrical impulses to allow for proper ventricular filling
C) To increase heart rate
D) To decrease heart rate
Ans - B
14) Which of the following is NOT a characteristic of cardiac muscle tissue?
A) Striated appearance
B) Involuntary control
C) Ability to conduct electrical impulses
D) Voluntary control
Ans - D
15) How do cardiomyocytes communicate with each other?
A) Through gap junctions
B) Through synapses
C) Through hormone signaling
D) Through electrical impulses
Ans - A
16) What is the purpose of the T-tubules in cardiac muscle tissue?
A) To increase the surface area for contraction
B) To facilitate the transmission of electrical impulses
C) To regulate calcium ion flow
D) To aid in muscle relaxation
Ans - C
17) Which of the following is a type of cardiac muscle tissue?
A) Atrial muscle
B) Ventricular muscle
C) Bundle of His
D) All of the above
Ans - D
18) What is the function of the bundle of His?
A) To transmit electrical impulses from the AV node to the ventricles
B) To delay electrical impulses to allow for proper ventricular filling
C) To increase heart rate
D) To decrease heart rate
Ans - A
19) Which of the following is NOT a function of cardiac muscle tissue?
A) To pump blood throughout the body
B) To regulate body temperature
C) To facilitate movement
D) To aid in digestion
Ans - B C D
20) How does cardiac muscle tissue adapt to increased demand?
A) Through hypertrophy (increased size)
B) Through hyperplasia (increased number)
C) Through increased mitochondrial density
D) All of the above
Ans - D
21) What is the name of the condition where the heart muscle becomes thickened and stiff?
A) Hypertrophy
B) Hyperplasia
C) Cardiomyopathy
D) Heart failure
Ans - C
22) Which of the following is a risk factor for cardiac muscle tissue disease?
1. High blood pressure
2. High cholesterol
3. Smoking
4. All of the above
Answer:
23) What is the name of the electrical conduction system that regulates heartbeat?
A) Sinoatrial (SA) node
B) Atrioventricular (AV) node
C) Bundle of His
D) Cardiac conduction system
Ans - D
24) Which of the following is a characteristic of cardiac muscle tissue contraction?
A) Tetanic contraction
B) Wave summation
C) All-or-none law
D) Both 2 and 3
Ans - D
Smooth Muscle:-
25. Smooth muscle is classified as which type of muscle tissue?
A) Voluntary and striated
B) Involuntary and non-striated
C) Involuntary and striated
D) Voluntary and non-striated
Ans - B
26. The shape of smooth muscle cells is described as:
A) Cylindrical
B) Branched
C) Spindle-shaped
D) Rectangular
Ans - C
27. Smooth muscle lacks:
A) Actin and myosin filaments
B) Striations
C) Nuclei
D) Plasma membrane
Ans - B
28. Smooth muscle contraction is regulated by:
A) Somatic nervous system
B) Autonomic nervous system
C) Central nervous system
D) Skeletal system
Ans - B
29. The primary protein responsible for contraction in smooth muscle is:
A) Tropomyosin
B) Myosin
C) Troponin
D) Fibrin
Ans - B
Location of Smooth Muscle
30. Smooth muscle is primarily found in:
A) Skeletal system
B) Heart
C) Walls of hollow organs
D) Skin
Ans - C
31. Which of the following contains smooth muscle?
A) Biceps brachii
B) Stomach
C) Cardiac septum
D) Diaphragm
Ans - B
32. Smooth muscle is not found in which of the following locations?
A) Blood vessels
B) Intestines
C) Uterus
D) Heart
Ans - D
33. Smooth muscle in the respiratory system is found in:
A) Alveoli
B) Bronchi and bronchioles
C) Tracheal cartilage
D) Pleural cavity
Ans - B
34. Smooth muscle in the urinary system is located in:
A) Kidneys
B) Bladder wall
C) Renal pelvis
D) Glomerulus
Ans - B
Functions of Smooth Muscle
35. The primary function of smooth muscle is to:
A) Provide voluntary movement
B) Pump blood
C) Facilitate movement in hollow organs
D) Stabilize bones
Ans - C
36. Smooth muscle contractions in the digestive system help in:
A) Absorption
B) Peristalsis
C) Enzyme secretion
D) Hormone production
Ans - B
37. Smooth muscle contraction in blood vessels primarily regulates:
A) Oxygen exchange
B) Blood pressure and flow
C) Blood filtration
D) Platelet aggregation
Ans - B
38. Smooth muscle in the iris of the eye controls:
A) Focusing of the lens
B) Constriction and dilation of the pupil
C) Eyeball movement
D) Tear secretion
Ans - B
39. Smooth muscle in the uterus is responsible for:
A) Maintaining posture
B) Hormonal production
C) Expulsion of the fetus during childbirth
D) Absorption of nutrients
Ans - C
Characteristics and Regulation
40. Which ion is crucial for smooth muscle contraction?
A) Potassium
B) Sodium
C) Calcium
D) Chloride
Ans - C
41. Smooth muscle contracts in response to:
A) Electrical stimulation only
B) Hormonal signals only
C) Electrical, hormonal, and mechanical stimuli
D) Mechanical stimuli only
Ans - C
42. The contraction of smooth muscle is typically:
A) Fast and forceful
B) Rhythmic and sustained
C) Rapid and fatigued easily
D) Uncoordinated
Ans - B
43. Smooth muscle contraction is mediated by which type of myofilaments?
A) Actin and myosin
B) Keratin and collagen
C) Elastin and fibrin
D) Tubulin and actin
Ans - A
44. Which neurotransmitter is commonly associated with smooth muscle contraction?
A) Acetylcholine
B) Dopamine
C) Serotonin
D) GABA
Ans - A
45. The type of contraction in smooth muscle of blood vessels is called:
A) Peristalsis
B) Vasoconstriction
C) Vasodilation
D) Both B and C
Ans - D
46. Which protein in smooth muscle replaces the role of troponin found in skeletal muscle?
A) Calmodulin
B) Tropomyosin
C) Desmin
D) Actomyosin
Ans - A
47. Which of the following is an example of multi-unit smooth muscle?
A) Uterine muscle
B) Iris muscle
C) Intestinal muscle
D) Stomach muscle
Ans - B
48. Which of the following is a property of smooth muscle?
A) Fatigues easily
B) Can divide and regenerate
C) Always under voluntary control
D) Requires direct nervous system input
Ans - B
49. Which layer of the gastrointestinal tract contains smooth muscle?
A) Mucosa
B) Submucosa
C) Muscularis externa
D) Serosa
Ans - C
50. Which of the following statement about skeletal muscle is incorrect?
A) Cylindrical and Striated appearance
B) Striated single nucleus
C) Multinucleted and Voluntary
D) Joints bones by tendon
Ans - B
1. Cardiac Muscles are?
A) Cylindrical, Striated, Multinucleted, voluntary
B) Branched, Striated, single nucleus, involuntary
C) Nonstriated, spindle shaped cell, single nucleus involuntary
D) All of the above
Ans - B
2. Smooth muscles are:
A) Cylindrical, Striated, Multinucleted, voluntary
B) Branched, Striated, single nucleus, involuntary
C) Nonstriated, spindle shaped cell, single nucleus involuntary
D) All of the above
Ans - C
Nervous Tissue
3. Nervous tissue is composed of:
A) Only neurons
B) Neurons and neuroglia
C) Axons and dendrites
D) Myelin sheaths only
Ans - B
4. The functional unit of the nervous tissue is the:
A) Neuroglia
B) Axon
C) Neuron
D) Synapse
Ans - C
5. Which part of the neuron receives incoming signals?
A) Axon
B) Dendrites
C) Soma
D) Synaptic cleft
Ans - B
6. The long projection of a neuron that transmits impulses away from the cell body is called:
A) Axon
B) Dendrite
C) Soma
D) Myelin
Ans - A
7. The gap between two neurons where signal transmission occurs is called:
A) Axon hillock
B) Synapse
C) Node of Ranvier
D) Neuroglial junction
Ans - B
Types of Neurons
8. Neurons that carry signals from sensory organs to the central nervous system are called:
A) Motor neurons
B) Sensory neurons
C) Interneurons
D) Efferent neurons
Ans - B
9. Interneurons are primarily found in the:
A) Peripheral nervous system
B) Central nervous system
C) Autonomic nervous system
D) Muscles
Ans - B
10. Multipolar neurons are most commonly found in:
A) Sensory pathways
B) The brain and spinal cord
C) Reflex arcs
D) Muscle junctions
Ans - B
11. Unipolar neurons are typically associated with:
A) Motor functions
B) Sensory functions
C) Cognitive functions
D) Reflex functions
Ans - B
12. Which of the following neurons are involved in reflex actions?
A) Sensory neurons only
B) Motor neurons only
C) Interneurons only
D) All of the above
Ans - D
Neuroglia and Their Functions
13. Which type of neuroglia produces myelin in the central nervous system?
A) Schwann cells
B) Astrocytes
C) Oligodendrocytes
D) Microglia
Ans - C
14. Which neuroglial cells are responsible for forming the blood-brain barrier?
A) Schwann cells
B) Ependymal cells
C) Astrocytes
D) Microglia
Ans - C
15. Schwann cells are found in the:
A) Brain
B) Spinal cord
C) Peripheral nervous system
D) Cerebrospinal fluid
Ans - C
16. The neuroglial cells that act as phagocytes in the central nervous system are called:
A) Astrocytes
B) Ependymal cells
C) Microglia
D) Oligodendrocytes
Ans -
17. Ependymal cells line the:
A) Myelin sheath
B) Synaptic cleft
C) Ventricles of the brain and spinal cord
D) Nodes of Ranvier
Ans - C
Functional Aspects
18. The purpose of the myelin sheath is to:
A) Provide structural support to neurons
B) Increase the speed of nerve impulse conduction
C) Facilitate synapse formation
D) Store neurotransmitters
Ans - B
19. Saltatory conduction occurs in neurons that are:
A) Non-myelinated
B) Myelinated
C) Multipolar
D) Unipolar
Ans - B
20. Nodes of Ranvier are:
A) Gaps between Schwann cells on an axon
B) Points of neurotransmitter release
C) Sites of synapse formation
D) Found only in unmyelinated neurons
Ans - A
21. The resting membrane potential of a neuron is typically:
A) -70 mV
B) 0 mV
C) +70 mV
D) -30 mV
Ans - A
22. During an action potential, depolarization occurs when:
A) Sodium ions enter the neuron
B) Potassium ions leave the neuron
C) Calcium ions enter the neuron
D) Chloride ions leave the neuron
Ans - A
Advanced Concepts
23. The neurotransmitter acetylcholine is primarily associated with:
A) Inhibitory signals in the brain
B) Muscle contraction at neuromuscular junctions
C) Blood-brain barrier formation
D) Myelination of axons
Ans - B
24. Which ion channel opens during the depolarization phase of an action potential?
A) Potassium channels
B) Sodium channels
C) Calcium channels
D) Chloride channels
Ans - B
25. Neurotransmitter release at the synapse is triggered by:
A) Entry of sodium ions
B) Entry of calcium ions
C) Exit of potassium ions
D) Opening of chloride channels
Ans - B
26. The dorsal root of a spinal nerve carries:
A) Motor information
B) Sensory information
C) Mixed information
D) Reflex information
Ans - B
27. Which of the following is a characteristic of the autonomic nervous system?
A) Controls voluntary muscle movements
B) Contains only sensory neurons
C) Regulates involuntary functions
D) Found only in the spinal cord
Ans - C
These questions cover fundamental and advanced aspects of nervous tissue and its components, helping you build a strong foundation for your exam preparation
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