RUHS
First Year MBBS Examination
I MBBS PHYSIOLOGY PAPER II
Date: 04-07-2021
Time: 3 hours

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Max Marks: 100
Instructions: INSTRUCTIONS: Attempt al
questions in both sections: (Use separate
answer book for each section)
Section 1

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1. Fill in the blanks: (6)
a. __________ is developed in condition of
hypothyroidism.
b. Abnormal planter reflex is called __________
c. ADH cause Reabsorption of water

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from__________
d. Corpus luteum secretes__________
e. Broca's aphasia also called__________
f. In Parkinson's disease degeneration
of__________neurons occurs.

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2. Choose the correct option in the following
multiple choice questions: (4)
a. Resting membrane potential is mainly due to:
a) Na+, b) K+ c) Cl- d) Mg+
b. Which of the following triggers muscle

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contraction? a) Ca binding Tropomyosin b) Ca
binding Tropocin C c) IP3 pathway d) Ca
uptake in SERCA
c. Fine touch and position sense is carried by: a)
Lateral spinothalamic tract b) Anterior

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spinothalamic tract c) Spinocerebellar tract d)
Dorsal column
d. Blood tissue barrier in testis is formed by: a)
Basal lamina and interstitial cells b) Adjacent
Sertoli cell with basal lamina c) Basal lamina

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and spermatogonia d) Basal lamina and
Leydig cells
3.A 43 year old male patient reported to
hospital with characteristic features of
centripetal distribution of body fat, buffalo

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humps, moon like facies, muscular atrophy (15)
and thinning of skin and subcutaneous tissue.
Based on the above case scenario, answer the
following questions:
a. What is the most likely diagnosis for this

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condition?

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b. Name the probable gland involved with its
pathophysiology.
c. What are the other characteristic of the
disease diagnosed?

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4. Write short notes on (Any five): (10)
a. Neurotransmitters
b. Placental hormones
c. Functions of thalamus
d. Grave's disease

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e. Fever
f. Sleep
5. Explain briefly (15)
a. Mechanism of actions of insulin (C-754)
b. Synaptic plasticity

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c. Lower and upper motor neuron
d. Benefits of exercise
Section 2
6.Describe spermatogenesis. Give the role of
FSH, LH, testosterone and inhibin B in the male

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reproductive system. Add note on
Cryptorchidism. (20)

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7. Explain why: (10)
a. Diabetic patient fail to gain weight inspite of
polyphagia.

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b. Touching of injured are a relieves pain.
c. REM sleep is also called Paradoxical sleep.
(C2-989)
d. Hypothalamic lesion affects on feeding
e. Effect of bilateral removal hippocampus in

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inability to learn.
f. Internal capsule lesion produce contra lateral
spastic paraplegia
8. Explain briefly: (20)
a. Organ of Corti (A.1047,1048) (8.927) (C2-

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1071)
b. Physiotherapy of smell
c. Alzheimer's disease (C2-1043)
d. Functions of cerebellum (A.870+872+874)
(C2-972)

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e. Lactation
f. Nervous regulation of respiration.
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