medical MCQs – Page 363

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

7241. 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

7242. 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

7243. 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

7244. In renal glycosuria, the renal threshold for glucose is_______________?
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A. Greatly increased

B. High

C. Same

D. Low

7245. Proximal renal tubule is most permeable to _______________?
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A. Potassium

B. Sodium

C. Bicarbonate

D. Ammonia

7246. Histamine is present on surface of_______________?
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A. Lymphocytes

B. Neutrophils

C. Mast cells

D. Erythrocytes

7247. 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

7248. 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

7249. Hunger centre of brain is________________?
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A. Frontal lobe

B. Stria nigra

C. Temporal lobe

D. Hypothalamus

7250. 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

7251. 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

7252. Blood cells arise in bone marrow and are subject to______________?
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A. Regular renewal

B. None of the above

C. Irregular renewal

D. Infrequent renewal

7253. Which of the following causes lysis of clot______________?
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A. Fibrin

B. Coagulase

C. Plasmin

D. Hyaluronidase

7254. Major portion of glomerular filtrate is absorbed in__________________?
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A. Distal convoluted tubule

B. Proximal segment

C. Collecting duct

D. Loop of Henle

7255. In a blood sample antiserum A and antiserum B and Rh+ ve factor is added. No agglutination is seen. This is_______________?
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A. AB group and Rh+ ve

B. AB group and Rh ve

C. O group and Rh+ ve

D. O group and Rh- ve

7256. Increased blood viscosity and slow circulation causes______________?
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A. RBC rouleax formation

B. None

C. Increased number of RBC in capillaries

D. Increased plasma skimming

7257. Fluid content of the blood is______________?
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A. Serum

B. Water

C. Plasma

D. Tissue fluid

7258. AB group has following agglutinins_______________?
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A. Anti A

B. Anti B

C. Neither anti A nor anti B

D. Anti A & Anti B

7259. To measure renal plasma clearance compound should be_________________?
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A. Completely filtered by glomerulus

B. Bound to plasma protein

C. Secreted by the tubules

D. <70,000 Mol.wt

7260. The cell junctions allowing exchange of cytoplasmic molecules between two cells are called________________?
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A. Focal junctions

B. Gap junctions

C. Anchoring junctions

D. Tight junctions

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