KALOJI NARAYANA RAO UNIVERSITY OF HEALTH SCIENCES
WARANGAL, TELANGANA STATE ? 506 002
MBBS FIRST YEAR EXAMINATIONS: SEPTEMBER,2025
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PHYSIOLOGYPAPER ? II
Time: 3 Hours
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Max Marks: 100Note: Answer all questions
Give Diagrammatic representation wherever necessary
Multiple Choice Questions:
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10 X 1 = 101. Actin is tethered to Z-lines in the sarcomere by:
a) Actinin
b) Titin
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c) Nebulin
d) Dystrophin
2. Rigor mortis is due to:
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a) Damage to actin and myosin
b) Rapid sequestration of Ca in ER
c) Increased myosin ATPase
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d) ATP depletion3. The condition of prosopagnosia usually results from Dysfunction or damage to which
area of the cerebral cortex?
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a) Prefrontal areab) Junction of parietal and temporal lobe
on nondominant side of the brain
c) Inferior temporal lobes
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d) Frontal eye fields4. Which of the following reflexes is correctly paired with the sensory structure that
mediates the reflex?
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a) Reciprocal inhibition-Golgi tendon b) Golgi tendon reflex-Meissner corpuscleorgan
c) Stretch reflex-muscle spindle
d) Reciprocal inhibition-Pacinian
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corpuscle5. Which of the following systems conveys information concerning highly localized touch
sensation and body position (proprioceptive) sensation?
a) Anterolateral system
b) Dorsal column-medial lemniscal system
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c)Corticospinal
d)
Spinocerebellar
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6. Which of the following is not a component of the near response?a) Pupillary constriction
b) Convergence of the visual axes
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c) Increase in convexity of the lensd) Ciliary muscle relaxation
7. The auditory pathway passes via all except:
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a) Cochlear nucleib) Superior olivary nucleus
c) Trapezoid body
d) Superior colliculus
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8. Insulin dependent glucose uptake into skeletal muscle and adipose tissue is mainly
mediated by:
a) GLUT 1
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b) GLUT 2c) GLUT 3
d) GLUT 4
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9. Menstruation is caused bya) Surge of LH Prior to midcycle
b) Failure of corpus luteum to involute
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c) Sudden reduction in oestrogend) Excessive secretion of oestrogen and
and progesterone at the end of the
progesterone at the end of the ovarian
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ovarian cyclecycle
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10. During the week following ovulation, the endometrium increases in thickness to 5 to 6
millimetres. What stimulates this increase in thickness?
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a) Luteinizing hormoneb) Oestrogen from the corpus luteum
c) Progesterone from the corpus
d) Follicle-stimulating hormone
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luteum
Essay/ Long Answer Questions:
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2 X 15 = 30
11. A 35-year-old man comes to his physician because of changes in his appearance. His hands
and feet have been growing and his brow and chin are also becoming larger. On examination
the patient did not see the fingers of the examiner when they were moved in either superior
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temporal visual field. Detailed visual filed examination by an ophthalmologist revealed avisual field defect in both temporal fields but the defect was more complete in superior rather
than in inferior quadrants. The patient was referred to a neurosurgeon for treatment. Based on
this information answer the following questions.
a) Name the hormone which is being secreted in excess.
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b) Explain the mechanism of action of hormone involved.c) Enumerate the metabolic function of this hormone.
d) Explain the underlying mechanism of changes in the patient's appearance.
e) What could be the cause for visual defect.
(2+4+4+3+2)
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12.A 32-year-old women presents to her primary care physician's office with difficulty inchewing food, she states that when she eats certain foods that require a significance amount
of chewing, her jaw muscle becomes weak and tired. After a period of rest, her jaw muscle
regains its strength until she eats again.
a. What is your diagnosis.
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b. Explain the events of transmission at NMJ.c. Treatment of the condition.
d. List out neuro muscular blockers.
(2+5+4+4)
Short Answer Questions:
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7 X 6 = 4213. Describe the different properties of action potential.
14. Mechanoreceptors
15. Describe three functional divisions of the cerebellum. Assign functions to each.
16. State the difference between various types of memories.
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17. Describe the process involved in pain modulation.18. Describe the role of hormones in sex determination and sex differentiation.
19. Indicators of Ovulation.
Very Short Answer Questions:
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6 X 3 = 18
20. Describe light reflex.
21. Combined contraceptive pills.
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22. Draw Olfactory pathway.23. Barriers of effective communication.
24. Weber- Fechner Law.
25. Define Electroencephalogram (EEG) what are the waves seen during REM sleep.
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