physiology MCQs – Page 20

Practise focused physiology questions with marked answers for exam preparation and subject revision.

physiology Mcqs
381. function of Merkels cells is_______________?
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A. Melanophage

B. Chemoreceptor

C. Tactile sensation

D. Proprioception

382. The percentage of body water is greater in_______________?
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A. Obese than in lean individuals

B. Male than in females

C. Children than in adult

D. old than in young objects

383. In CNS, the myelination is carried out by _____________?
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A. Microglia

B. Oligodendrocytes

C. Schwann cells

D. Astrocytes

384. Following are extrapyramidal tracts except______________?
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A. Corticospinal

B. Reticulospinal

C. Vestibulospinal

D. Rubrospinal

385. All are features of skeletal muscle except______________?
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A. Cylindrical

B. Multiple nuclei

C. Centrally placed nuclei

D. Transverse striation

386. Cell bodies of the neurons which carry taste sensation from the anterior 2/3rd of the tongue are located in________________?
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A. Superior cervical ganglion

B. Otic ganglion

C. Geniculate ganglion

D. Trigeminal nerve ganglion

387. Bacteria are most commonly ENGULFED by _________________?
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A. Neutrophilic leukocytes

B. Large granular lymphocytes

C. Killer cells

D. Small lymphocytes

388. Body temperature is maintained by ______________?
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A. all of the above

B. Covering of the body

C. Peripheral vasoconstriction

D. Postural position

389. Decreased basal metabolic rate is seen in_______________?
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A. Feeding

B. Exercise

C. Obesity

D. Hyperthyroidism

390. Decreased MCHC is found in_____________?
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A. Vit B12 deficiency

B. Megaloblastic anemia

C. Microcytic hypochromic anemia

D. Sideroblastic anemia

391. Centre of activity of autonomic nervous system is_________________?
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A. Cerebrum

B. Hypothalamus

C. Midbrain

D. Pons

392. Secondary granules of neutrophils contain______________?
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A. Lactoferrin

B. Myeloperoxidase

C. Nucleosidase

D. Catalase

393. Inulin clearance closely resembles_____________?
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A. Creatinine clearance

B. P.A.H. clearance

C. G.F.R

D. Renal plasma flow

394. Small packets of acetylcholine released randomly from the nerve cell membrane at rest Produces_______________?
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A. Inhibitory post synaptic potential

B. Action potential

C. End plate potential

D. Miniature end plate potential
395. Copious flow of watery saliva is secreted in response to _____________?
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A. CNS stimulation

B. sensory stimulation

C. Sympathetic stimulation

D. Parasympathetic stimulation
396. The skeletal muscle action potential______________?
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A. Begins with an, in ward movement of K+ ins

B. Spreads in ward to all parts of the muscle via the t- tubule system

C. Is not essential for contraction to occur

D. Has a prolonged plateau phase?

397. The processing of short-term memory to long term memory is done in_______________?
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A. Neocortex

B. Prefrontal cortex

C. Hippocampus

D. Amygdala

398. Blood supply to the brain during moderate exercise________________?
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A. Remains constant

B. decreases

C. Increases

D. Increases then decreases

399. Diuresis is caused by______________?
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A. Urea

B. Mannitol

C. Glycerol

D. All of the above
400. Which of the following is important in renal excretion of hydrogen ion ?
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A. Trapping H+ by acetate

B. Combining H+ and HCO3- via enzyme carbonic anhydrase

C. Trapping H+ by NH3+

D. Combining H+ with Cl- to form Hcl