CBME
DR.NTR UNIVERSITY OF HEALTH SCIENCES: AP: VIJAYAWADA-520 008
MBBS DEGREE EXAMINATION – JANUARY, 2023
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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) 1x20=20
-
The sensation carried by the lateral spinothalamic tract is
- Vibration
- Fine touch
- Warmth
- Stereognosis
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-
With respect to pain, a correct statement is:
- Free nerve endings are the pain receptors
- Visceral pain reaches the spinal cord through motor nerve fibers
- Fibers carrying pain impulses synapse at nucleus cuneatus in the medulla
- Pain is carried by dorsal column tract
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-
Slow waves in visceral smooth muscle
- Can initiate action potential
- Are also called pacemaker waves
- Arise without an external stimulus
- All of the above
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Which one of the following is NOT true about compound action potential in a mixed nerve
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- Obeys all/none law
- First peak belongs to slowest conducting fiber
- Shows different peaks
- First peak belongs to fastest conducting fiber
-
Flushing, anhidrosis, ptosis, miosis, and absence of cellospinal reflex is seen in
- Brown Sequard Syndrome
- Cushing's reflex
- Tabes dorsalis
- Horner's syndrome
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-
Which of the following neurotransmitters is used by the axons of substantia nigra neurons, which project to the caudate and putamen?
- Norepinephrine
- Dopamine
- Serotonin
- Acetylcholine
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-
Which of the following neurons forms synaptic junctions with intrafusal fibers within the muscle spindles?
- Alpha motor neurons
- Pyramidal neurons
- Gamma motor neurons
- Granule cells
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-
Which of the following is the correct Broadmann number for the primary motor cortex?
- 6
- 5
- 4
- 3
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Blobs of visual cortex are associated with
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- Color processing
- Orientation
- Saccadic eye movements
- Light perception
-
If red and green cones are stimulated equally, the color observed is
- Red
- Green
- Yellow
- Purple
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Medial geniculate body is related to
- Vision
- Hearing
- Smell
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-
- Taste
The physiological basis for 'phantom limb' is
- Muller's law and Bell Magendie law
- Doctrine of specific nerve energies
- Muller's law and Law of Projection
- Bell Magendie law and Law of Projection
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Hypocalcemia is caused due to
- Thyroxine
- Parathormone
- Cholecalciferol
- Calcitonin
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Angiotensin is produced in
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- Liver
- Kidney
- Hypothalamus
- Lungs
-
Melatonin is secreted from
- Hypothalamus
- Pineal gland
- Adrenal cortex
- Melanocytes
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Hypoglycemic hormone is
- Catecholamine
- Somatostatin
- Cortisol
- Insulin
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Estrogen is not produced by
- Pituitary
- Ovary
- Adrenal Cortex
- Placenta
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Elasticity of cervical mucus is seen in
- Proliferative stage
- Luteal stage
- Midcycle
- Menstruation
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Mid-cycle rise of basal body temperature is due to
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- LH
- FSH
- Estrogen
- Progesterone
-
Most powerful vasopressor is
- Renin
- Angiotensin II
- Aldosterone
- Cortisol
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