Date of issue :
Centre :
Sup. Sign. :
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Seat No. :
First Year M. B. B. S. Examination
January 2022
Physiology: Paper 2
[Total Marks: 20
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Time: Hours]
Instruction :
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Fillup strictly the details of signs on your answer book.
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Name of the Examination: First Year M. B. B. S.
Name of the Subject: Physiology: Paper - 2
Subject Code No.:
Seat No.: 2006000101020002
Section No. (1, 2,.....): Nil
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Student's Signature
Section A
MCQs 20 marks
- Which taste sensation is the most sensitive (has the lowest stimulation threshold)?
- Acid
- Bitter
- Salty
- Sour
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- Which of the following best describes the "blind spot"of the eye?
- Located 5 degrees lateral to the central point of vision
- The exit point of the optic nerve
- Contains only rods and thus has monochromatic vision
- Contains no blood vessels
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- After olfactory receptor cells bind odor molecules, a sequence of intracellular events occurs that culminates in the entrance of specific ions that depolarize the olfactory receptor cell. Which ions are involved?
- Calcium
- Chloride
- Hydrogen
- Sodium
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- Which of the following middle ear ossicle is attached to the tympanic membrane?
- Columella
- Incus
- Malleus
- Modiolus
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- Olfactory receptor cells belong to which group of cells?
- Bipolar neurons
- Fibroblasts
- Modified epithelial cells
- Multipolar neurons
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- Interneurons that utilize the neurotransmitter enkephalin to inhibit afferent pain signals are most likely to be found in which region of the central nervous system?
- Dorsal horn of spinal cord
- Postcentral gyrus
- Precentral gyrus
- Ventral horn of spinal cord
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- Which type of papillae is located in the posterior part of the tongue?
- Circumvallate
- Foliate
- Fungiform
- Fungiform and circumvallate
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- The processing of short term memory to long term memory is done in :
- Prefrontal cortex
- Hippocampus
- Neocortex
- Amygdala
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- Which of the following thalamic nucli acts as a relay for transmission of Auditory information
- Dorsomedial
- Lateral geniculate
- Medial geniculate
- Ventral posterolateral
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- A 17-year-old boy sustains serious head and neck trauma during a football game. Physical examination shows a positive Babinski sign. Which of the following is most likely to be damaged in this boy?
- Anterior motor neurons
- Cerebellum
- Corticospinal tract
- Premotor cortex
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- Within minutes after a normal delivery, flow through the foramen ovale decreases dramatically. What is the cause of this change?
- Increased formation of prostaglandin E2 (PGE2) in the endocardium
- Increased rate of flow through the pulmonary artery
- Increased left atrial pressure
- Increased right atrial pressure
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- For male differentiation to occur during embryonic development, testosterone must be secreted from the testes. What stimulates the secretion of testosterone during embryonic development?
- LH from the maternal pituitary gland
- HCG
- Inhibin from the corpus luteum
- GnRH from the embryonic hypothalamus
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- Why do infants of mothers who had adequate nutrition during pregnancy not require iron supplements or a diet rich in iron until about 3 months of age?
- Growth of the infant does not require iron until after the third month
- The fetal liver stores enough iron to meet the infant's needs until the third month
- Synthesis of new red blood cells begins after 3 months
- Muscle cells that develop before the third month do not contain myoglobin
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- What accompanies sloughing of the endometrium during the endometrial cycle in a normal woman?
- An increase in progesterone
- The LH "surge"
- A decrease in both progesterone and estrogen
- An increase in estradiol
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- Which of the following increases secretion of GH?
- Senescence
- Insulin-like growth factor-1
- Somatostatin
- Hypoglycemia
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- Which hormone is largely unbound / least bound to plasma proteins?
- Cortisol
- T4
- ADH
- Estradiol
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- A 24-year-old student goes hiking in the Thar Desert during summer break. The environmental temperature is 105°F and the relative humidity is 20 percent. Which option best describes the major mechanism of heat loss in this student?
- Conduction to air
- Conduction to objects
- Convection
- Evaporation
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- Most of the energy for strenuous exercise that lasts for more than 5 to 10 seconds but less than 1 to 2 minutes comes from what source?
- ATP
- Anaerobic glycolysis
- Oxidation of carbohydrates
- Oxidation of lactic acid
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- Parasympathetic neurons
- Originate in the brain stem and then run via the vagus to the paravertebral ganglia
- Release noradrenaline at their terminals which in turn activates adrenergic receptors
- Cause vasodilatation in the blood vessels of the external genitalia
- Coordinate the so-called 'flight or fight' response
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- The neurotransmitter released by axon terminals of preganglionic sympathetic fibre is
- Acetylcholine
- Noradrenaline
- Epinephrine
- Dopamine
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This download link is referred from the post: VNSGU MBBS Last 15 Years 2010-2025 Previous Question Papers (Veer Narmad South Gujarat University)