Download NTRUHS 1st Year MBBS mcqs Physiology Paper II MCQs Question Paper

Q.P. CODE: M102A031

Dr NTR UNIVERSITY OF HEALTH SCIENCES: VIJAYAWADA- 520008

MBBS DEGREE EXAMINATION - AUGUST, 2024

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FIRST M.B.B.S. EXAMINATION

PHYSIOLOGY - PAPER-II (SET-B)

(Multiple Choice Questions)

Time: 20 Minutes Max Marks: 20

Note: Answer all questions.

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SECTION-I (MCQs - 20 MARKS) 1X2=20

1. In the contracted state of skeletal muscle, the width of
   1. A band decreases
   2. H band increases
   3. I band decreases
   4. I band increases

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2. At the neuromuscular junction, the motor neuron releases
   1. Norepinephrine
   2. Histamine
   3. Acetylcholine
   4. Neurotrophin

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3. Rheobase denotes
   1. Specificity of impulse transmission
   2. Rate of discharge of neuron
   3. Strength of current
   4. Duration of current

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4. Graded potential is generated in the neuron at
   1. Dendrites
   2. Axon hillock
   3. Axon
   4. Axon terminal

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5. Which of the following is not true about the parturition reflex?
   1. It is a neurohumoral reflex
   2. Oxytocin is the main hormone to induce uterine contraction
   3. Control of uterine contraction by oxytocin is an example of negative feedback regulation
   4. Estrogen increases the number and sensitivity of oxytocin receptors in the uterine muscle

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6. Which of the following is not the function of relaxin?
   1. Inhibits uterine contraction
   2. Inhibits sperm motility
   3. Dilution of uterine cervix
   4. Relaxation of pubic symphysis

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7. Ovulation is associated with a sudden preovulatory(surge) rise in
   1. GnRH and FSH
   2. Testosterone
   3. LH
   4. Oxygen

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8. Single unit smooth muscle means
   1. Multiple fibers functioning as a single unit
   2. Single muscle cell
   3. Single stimulus to the muscle produces successive contractions
   4. Each muscle fiber contracts independently of other

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9. Which of the following is not a theory of referred pain:
   1. Gate control theory
   2. Facilitation theory
   3. Convergence theory
   4. Dermatomal theory

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10. Renshaw cell inhibition is an example of.
    1. Negative feedback inhibition
    2. Positive feedback inhibition
    3. Postsynaptic inhibition
    4. Feedforward inhibition

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11. Which is the best female contraceptive method after childbirth, not desirous of further deliveries?
    1. IUD
    2. OCP
    3. Tubectomy
    4. Diaphragms

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12. Estrogen mainly causes the development of components of the breast:
    1. Duct system
    2. Lobulo-alveolar system
    3. Parenchyma of breast
    4. Myoepithelial cells of the breast

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13. Lower motor neuron paralysis will not manifest as:
    1. Muscle hypertonia
    2. Muscle atrophy
    3. Depressed tendon reflexes
    4. Babinski no response or negative

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14. All are true about inverse stretch reflex, EXCEPT:
    1. Receptor is GTO
    2. Afferent is Ib fiber
    3. Afferent terminates on interneuron that contacts homonymous motoneuron
    4. Monosynaptic reflex

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15. In sensory homunculus, which of the following body part is most represented?
    1. Face
    2. Neck
    3. Trunk
    4. Legs

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16. Which of the following is not the direct function of the thalamus?
    1. Relay center of all sensations
    2. Perception of pain temperature and pressure
    3. Sensory-motor coordination
    4. Secretion of hormones

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17. Broca's area is concerned with:
    1. Word formation
    2. Comprehension
    3. Repetition
    4. Reading

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18. Which of the following is not a feature of Kluver-Bucy syndrome?
    1. Hypersexuality
    2. Hypophagia
    3. Visual agnosia
    4. Respond to every stimulus and explore everything

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19. Which of the following nucleus controls the circadian rhythm?
    1. Supraoptic nucleus
    2. Paraventricular nucleus
    3. Suprachiasmatic nucleus
    4. Premammillary nucleus

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20. All the following are nuclear groups of basal ganglia, EXCEPT:
    1. Supraoptic nucleus
    2. Paraventricular nucleus
    3. Suprachiasmatic nucleus
    4. Premammillary nucleus

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