HEALTH SCIENCES
WARANGAL, TELANGANA STATE-506 002
MBBS FIRST YEAR EXAMINATIONS:
SEPTEMBER, 2025
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PHYSIOLOGYPAPER - II
(NEW SCHEME)
Time: 3 Hours
Max Marks: 100
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Note: Answer all questionsGive Diagrammatic representation wherever necessary
Multiple Choice Questions
10 X 1=10
1) Actin is tethered to Z-lines in the sarcomere by:
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a) Actininc) Nebulin
b) Titin
d) Dystrophin
2) Rigor mortis is due to:
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a) Damage to actin and myosinc) Increased myosin ATPase
b) Rapid sequestration of Ca in ER
d) ATP depletion
3) The condition of prosopagnosia usually results from
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dysfunction or damage to which area of the cerebral
cortex?
a) Prefrontal area
b) Junction of parietal and temporal lobe
c) Inferior temporal lobes on nondominant side of the
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braind) Frontal eye fields
4) Which of the following reflexes is correctly paired
with the sensory structure that mediates the reflex?
a) Reciprocal inhibition-Golgi tendon
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c) Stretch reflex-muscle spindleb) Golgi tendon reflex-Meissner corpuscle
d) Reciprocal inhibition-Pacinian corpuscle
5) Which of the following systems conveys information
concerning highly localized touch sensation and body
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position (proprioceptive) sensation?a) Anterolateral system
c) Corticospinal
b) Dorsal column-medial lemniscal system
d) Spinocerebellar
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6) Which of the following is not a component of the nearresponse?
a) Pupillary constriction
c) Increase in convexity of the lens
b) Convergence of the visual axes
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d) Ciliary muscle relaxation7) The auditory pathway passes via all except:
a) Cochlear nucleus
c) Trapezoid body
b) Superior olivary nucleus
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d) Superior colliculus8) Insulin dependent glucose uptake into skeletal muscle
and adipose tissue is mainly mediated by:
a) GLUT 1
c) GLUT 3
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b) GLUT 2d) GLUT 4
9) Menstruation is caused by
a) Surge of LH prior to midcycle
c) Sudden reduction in oestrogen and progesterone at
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the end of the ovarian cycleb) Failure of corpus luteum to involute
d) Excessive secretion of oestrogen and progesterone at
the end of the ovarian cycle
10) During the week following ovulation, the
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endometrium increases in thickness to 5 to 6 millimetres.What stimulates this increase in thickness?
a) Luteinizing hormone
c) Progesterone from the corpus luteum
b) Oestrogen from the corpus luteum
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d) Follicle-stimulating hormoneEssay/ Long Answer Questions
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
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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
temporal visual field. Detailed visual filed examination by
an ophthalmologist revealed a visual field defect in both
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temporal fields but the defect was more complete insuperior 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 hormoneinvolved.
c) Enumerate the metabolic function of this hormone.
d) Explain the underlying mechanism of changes in the
patient's appearance.
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e) What could be the cause for visual defect.(2+4+4+3+2)
12) A 32-year-old women presents to her primary care
physician's office with difficulty in chewing food, she
states that when she eats certain foods that require a
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significance amount of chewing, her jaw muscle becomesweak and tired. After a period of rest, her jaw muscle
regains its strength until she eats again.
a. What is your diagnosis.
b. Explain the events of transmission at NMJ.
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c. Treatment of the condition.d. List out neuro muscular blockers.
(2+5+4+4)
Short Answer Questions
7X6=42
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13) 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
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memories.17) Describe the process involved in pain modulation.
18) Describe the role of hormones in sex determination
and sex differentiation.
19) Indicators of Ovulation.
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Very Short Answer Questions6X3=18
20) Describe light reflex.
21) Combined contraceptive pills.
22) Draw Olfactory pathway.
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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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Document Outline
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