Q.P. CODE:504-A-CBME
DR.NTR UNIVERSITY OF HEALTH SCIENCES: AP: VIJAYAWADA-520 008
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MBBS DEGREE EXAMINATION - JAN/FEB, 2022
FIRST M.B.B.S. EXAMINATION
PHYSIOLOGY - PAPER-II (SET-A)
(Multiple Choice Questions)
Time: 20 Minutes Max Marks: 20
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Note: Answer all questions
SECTION - I (MCQs- 20 MARKS) 1x20=20
1) Myelinated nerves
a. Axons have smaller diameter
b. Nerve impulses travel uniformly along axolemma
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c. Density of voltage-gated Na+ channels are more
d. Na+ channels are less in axons
2) The following vitamin is essential for oxidation of pyruvic acid and lactic acids in the neurons
a. Vitamin B1
b. Vitamin B6
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c. Vitamin B12
d. Vitamin B2
3) Lidocaine
a. K+ channel blocker
b. Na+K+ ATPase blocker
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c. Membrane toxin
d. Na+ channel blocker
4) In isometric contraction in skeletal muscle, there is
a. Increase in muscle length
b. Increase in muscle tension
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c. External work is done
d. Decrease in muscle length
5) Staircase phenomenon (Treppe) is due to
a. Tetanus
b. Summation of contraction
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c. Progressively increased calcium available in the sarcoplasm
d. Increased Troponin level in the thin filaments
6) Sertoli cells secrete:
a. Testosterone
b. Estrogen
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c. Androstenedione
d. Inhibin
7) The primordial follicle becomes primary follicle at
a. 28 weeks of gestation
b. 21 weeks of gestation
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c. 14 weeks of gestation
d. 7 weeks of gestation
8) Main hormone in luteal phase is:
a. Estrogen
b. Progesterone
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c. Prolactin
d. Oxytocin
9) Progesterone mainly causes development of which component of the breast?
a. Duct system
b. Lobulo-alveolar system
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c. Parenchyma of breast
d. Myoepithelial cells of breast
10) Which is the best contraceptive method for a lady before 1st child birth?
a. OCP
b. IUD
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c. Tubectomy
d. Diaphragms
11) Scavenger cells in brain?
a. Astrocyte
b. Oligodendrocyte
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c. Golgi cells
d. Microglia
12) The inhibitory neurotransmitter in CNS neurons is:
a. Glutamate
b. Aspartate
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c. Gamma-amino butyric acid
d. Taurine
13) The action potential from a receptor is generated at:
a. Lamella at nerve ending
b. Nerve ending
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c. First node of Ranvier
d. Cells attached to the nerve ending
14) Which of the following sensation is not carried in dorsal column pathway?
a. Vibration
b. Stereognosis
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c. Crude touch
d. Proprioception
15) Which of the following is 'true' about visceral pain?
a. It is poorly localized
b. Resembles 'fast pain' produced by noxious stimulation of the skin
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c. Mediated by B fibers in the dorsal roots of the spinal nerves
d. Causes relaxation of nearby skeletal muscles
16) The diameter of Golgi tendon organ is
a. 100 mm
b. 150 mm
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c. 50 mm
d. 200 mm
17) Striatonigral projection; degeneration of this pathway produces
a. Parkinsonism
b. Huntington's disease
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c. Ballism
d. Hemiballism
18) Slow wave sleep is associated with:
a. Dreams
b. Cardiac arrhythmia
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c. Penile intumescence
d. Delta activity
19) The total refractive power of the eye is 60 D, which is contributed by
a. 43 D by lens and 17 D by cornea
b. 30 D by lens and 30 D by cornea
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c. 23 D by lens and 37 D by cornea
d. 17 D by lens and 43 D by cornea
20) Hemingelect occurs in lesion of:
a. Temporal lobe
b. Prefrontal lobe
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c. Parietal lobe
d. Frontal lobe
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