physiology MCQs – Page 18

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

physiology Mcqs
341. The study of the electrical activity of the muscle is_______________?
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A. Venn diagram

B. EEG

C. EMG

D. ECG

342. Thromboxane is produced mainly by _______________?
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A. Vascular endothelium

B. Platelets

C. Liver

D. Damaged tissue

343. Life cycle of RBC is_______________?
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A. 120 days

B. 90 days

C. 12 days

D. One month

344. AB blood group antigen are known as ________ factors?
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A. Landsteiner

B. Rhesus

C. Lutheran

D. Duffy

345. Group B fibers are present in_____________?
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A. Spinothalamic tracts

B. Golgi tendon apparatus

C. Autoonomic preganglionic fibers

D. Intrafusal fibers of the muscle spindle

346. A motor unit is made up of______________?
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A. A flexor muscle and an extensor muscle

B. A single motor neuron and all the muscle fibers it innervates

C. A single skeletal muscle and all the motor peurons that supply it

D. All the motor neurons in which response are observed after maximal stimulation of a single sensory nerve

347. Stimulating mechanoreceptors or nociceptors in mouth triggers the_______________?
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A. Jaw clenching reflex

B. Jaw gnashing reflex

C. Jaw opening reflex

D. None of the above

348. Site of RBC formation in 20 years old healthy male is____________?
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A. Yolk sac

B. Liver

C. Flat bones

D. Long bones

349. In PHC, which anticoagulant is used to send the blood sample for blood glucose_____________?
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A. Potassium oxalate

B. EDTA

C. Heparin

D. Potassium oxalate+ sodium fluoride
350. Iron is stored in_______________?
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A. Plasma

B. Reticule endothelial system

C. RBC

D. All

351. Plasma thromboplastin antecedent is______________?
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A. Anti-hemophiliac C factor

B. Anti-hemophiliac F factor

C. Anti-hemophiliac A factor

D. Anti-hemophiliac B factor

352. Plasma factor present in both serum & plasma is____________?
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A. V

B. VII

C. Fibrinogen

D. II

353. The first physiological response to high environmental temperature is_______________?
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A. Decrease heat production

B. Non- shivering thermogenesis

C. Sweating

D. Vasodilatation
354. Functional unit of kidney is______________?
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A. Glomerulus

B. Collecting ducts

C. Loop of Henle

D. Nephron
355. To preserve blood for transfusion later______________?
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A. Add solution of calcium chloride

B. Dilute with equal volume of 0.9% saline

C. Add solution of sodium citrate

D. Add fibrinogen

356. Clotting factor common to extrinsic and intrinsic pathway is_____________?
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A. Factor V

B. Factor VII

C. Factor III

D. Factor II

357. The renal threshold for glucose is_______________?
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A. 80 mg/dl

B. 100 mg/dl

C. 180 mg / dl

D. 120 mg/dl

358. Tissues with least regenerative potential is________________?
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A. Nerve

B. None of the above

C. Cardiac muscle

D. Skin

359. Which of the following is not a vitamin K dependent procoagulant ?
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A. Factor II

B. Factor XI

C. Factor IX

D. Factor VII

360. Renin secretion is stimulated by all except_____________?
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A. Cardiac failure

B. Sympathetic stimulation

C. Low Na+ in proximal tubule

D. High Na+ in proximal tubule