0824E 204
First Year MBBS Examination
I MBBS Physiology Paper 2
Time: 3 hours
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Instructions: 1. Answer to the points. 2.Use separate answer books for each
section. 3. Draw diagrams wherever
necessary.
Section 1
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Max Marks: 1001.Write the following structured long
questions (Any 1 out of 2) (1.x 10 = 10
Marks)
(10)
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a. Enumerate the descending tracts inspinal cord. Trace the pathways of
Pyramidal Tracts. Explain the functions
of Pyramidal tracts. (2+5+3)
b. Enumerate the components of basal
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ganglia. What is the role of basalGanglia in motor activity. Describe the
pathophysiology and signs and
symptoms of Parkinson's Disease.
(2+2+6)
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2.Write the following case basedscenario/applied short notes (Any 2 out of
3) (2 x 6 = 12 Marks)
(12)
a. A 24-year-old female visited medicine
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OPD with complaints of easyfatigability. She was Indian classical
dancer and she said that she could not
perform intricate eye movements due to
drooping of eyelids and she was forced
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to take periods rest during herperformance. Investigations were done
Conduction velocity in ulnar nerve
120m/sec. Chronaxie in the muscles
(both sides) was normal when
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stimulated directly and was very highwhen stimulated through nerve. She
was diagnosed as case of myasthenia
gravis.Draw a neat labeled diagram of
neuromuscular junctions. Give the
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cause of myasthenia gravis. (2) a.Enumerate the sequence of events
occurring at neuromuscular junction.
(1) B. Define rheobase and chronaxie
(1) C. Name the sites where
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acetylcholine is released. (1) d. Givephysiological basis of treatment of
myasthenia gravis. (1)
b. A70 years old male was admitted in
medical ward with non-healing ulcer on
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right leg since 15 days and withcellulitis. History of diabetes mellitus
since last 30 years RBSL 285 mg/di,
HbAic 9% He was diagnosed as
diabetes mellitus with cellulitis A. What
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is diabetes mellitus? Give differences
between type | & II diabetes mellitus (2)
B. Comment on HbAic and give its
normal values. (1) C. Gives actions of
insulin (2) D. What are the
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complications of diabetes mellitus (1)c. Brown Sequard Syndrome
3.Write short notes on the following. (Any
3 out of 4) (3 x 6 = 18 Marks)
(18)
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a. Composition, circulation and Functionsof bile.
b. Deglutition.
c. Maternal changes during pregnancy.
d. Spermatogenesis.
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4.Answer in only 2-3 sentences, (Any 5out 6) (5 x 2 = 10 Marks)
(10)
a. Differences between Myenteric plexus
and Meissner's plexus.
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b. Functions of large intestines.c. Phantom Limb.
d. Broca's Aphasia.
e. Male contraceptives.
f. Role of Oxytocin in Parturition.
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Section 25.Write the following structured long
questions (Any 1 out of 2) (4 x 10 = 10
Marks)
(10)
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a. Enumerate the hormones synthesizedby Anterior Pituitary. Describe
mechanism of action of Growth
hormone. Give the actions of Growth
hormone. (2+4+4)
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b. Give the actions of Glucocorticoids.Discuss Enumerate the hormones
synthesized by Adrenal cortex. Discuss
Cushing's Syndrome. (2+5+3)
6.Write short notes on. (Any 2 out of 3)
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(2x 6 = 12 Marks)(12)
a. Draw and describe the Action Potential
of a nerve along with ionic changes
occurring.
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b. Describe the excitation contractionprocess occurring in skeletal muscle.
c. Describe Wallerian Degeneration and
Regeneration.
7.Write short notes on the following. (Any
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3 out of 4) (3 x 6 = 18 Marks)(18)
a. Differences between Sympathetic and
Parasympathetic Nervous systems.
b. Describe Parasympathetic nervous
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system acting as Anabolic nervoussystem.
c. Taste Pathway.
d. Errors of Refraction.
8.Write in only 2-3 sentences. (Any 5 out
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6) (5 x 2 = 10 Marks)(10)
a. Hypo calcemic Tetany.
b. Graves' Disease.
c. Functions of Middle ear.
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d. Dark Adaptation.e. Fatigue in Muscle.
f. Cholinergic Receptors in ANS