physiology MCQs – Page 21

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

physiology Mcqs

401. Electromyography is used for________________?
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A. To study muscle activity

B. Determine the centric occlusion

C. Determine class II malocclusion

D. Determine the centric relation

402. The most common problem with blood trans fusion_______________?
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A. Hypokalemia

B. Metabolic acidosis

C. Hemolytic reaction

D. Remission of disease

403. Serum is blood plasma without_____________?
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A. Fibrinogen

B. Plasma colloids

C. Lymphocytes

D. Blood cells

404. Skeletal muscles_____________?
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A. Contraction is initiated by calcium binding to troponin

B. Contracts when actin and myosin filaments shorten

C. Contracts when calcium is taken up by sarcoplasmic reticulum

D. Contraction is initiated by calcium binding to tropomyosin

405. The tissue macrophages are derived from the________________?
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A. Neutrophil

B. Eosinophil

C. Monocyte

D. All of the above

406. Which of the following represents most dangerous situation_____________?
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A. Rh+ ve mother, bearing her 1st Rh ve child

B. Rh+ ve mother, bearing her 2nd + ve child

C. Rh+ ve mother, who is bearing 2nd Rh+ ve child

D. Rh ve mover, bearing her 1stRh + ve child

407. The normal A/G ratio in blood is______________?
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A. 1:02

B. 5:01

C. 2:1

D. 1:01

408. Normal adult persons blood contains_____________?
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A. 10% basophils

B. 20% eosinophils

C. 30% lymphocytes

D. 40% neutrophils

409. Plasma ceruloplasmin alpha 2 globulins is a______________?
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A. beta 1 globulin

B. alpha 1 globulin

C. alpha 2 globulin

D. beta 2 globulin

410. Biconcave shape of RBC helps by___________________?
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A. Increasing flexibility

B. Passing easily through smaller capillaries

C. Increasing surface area

D. Carrying more Hemoglobin

411. Embryonic hemoglobin is composed of________________?
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A. Alpha and beta

B. Gamma and alpha

C. Gamma and beta

D. Epsilon and gamma

412. Which one of the following is a regulatory protein of the muscle ?
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A. Myosin

B. Protein- C

C. Actin

D. Troponin

413. In renal glycosuria, the renal threshold for glucose is_______________?
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A. Greatly increased

B. High

C. Same

D. Low

414. Proximal renal tubule is most permeable to _______________?
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A. Potassium

B. Sodium

C. Bicarbonate

D. Ammonia

415. Histamine is present on surface of_______________?
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A. Lymphocytes

B. Neutrophils

C. Mast cells

D. Erythrocytes

416. Which of the following vitamins is necessary for maturation of blood precursor cells________________?
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A. Vit- A

B. Riboflavin

C. Cyano cobalamine

D. Thiamine

417. The renal clearance of _______________?
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A. Chloride increases after in injection of aldosterone

B. Inulin is lower than that of urea

C. PAH continues to rise as the plasma concentration of PAH increases

D. Creatinine indicates glomerular filtration rate

418. Hunger centre of brain is________________?
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A. Frontal lobe

B. Stria nigra

C. Temporal lobe

D. Hypothalamus

419. which receptor is responsible for monitoring the rate of muscle stretch ?
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A. Nuclear bag intrafusal fibers

B. Nuclear chain

C. Pacinium corpuscles

D. Golgi tendon organ

420. Hyper kinetic syndromes such as chorea and athetosis are usually associated with pathological changes in_______________?
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A. Motor areas of cerebral cortex

B. Anterior hypothalamus

C. Pathways for recurrent collateral inhibition in the spinal cord

D. Basal ganglia complex

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