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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
501. |
Parasympathetic stimulation of the heartA. decreases the heart rateB. increases cardiac outputC. increases the force of ventricular contractionD. increases the rate of depolarization of the SA node |
Answer» Correct Answer - A | |
502. |
Lymph differs from blood in possessingA. More proteins and less waste productsB. Less proteins and more waste productsC. More proteins and more waste productsD. Less proteins and less waste products |
Answer» Correct Answer - B | |
503. |
Compared to blood our lymph hasA. Plasma without proteinsB. More WBCs and no RBCsC. More RBCs and less WBCsD. No plasma |
Answer» Correct Answer - B | |
504. |
The life span of thrombocytes isA. 4 to 5 weeksB. 3 to 4 weeksC. 3 to 7 daysD. none of these |
Answer» Correct Answer - C Thrombocytes are involved in blood clotting. Their life span is 3-7 days. |
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505. |
Erythroblastosis foetalis occurs when a factor from mother passes into foetus through placentaA. Rh antigenB. Rh antibodiesC. AgglutininsD. ABO antibodies |
Answer» Correct Answer - B | |
506. |
Thrombocytes have a life ofA. 3-4 weeksB. 4-5 weeksC. 3-4 daysD. None of the above |
Answer» Correct Answer - C Thrombocytes have a life of 3-4 days. |
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507. |
LymphA. Transports oxygen to brainB. Transports `CO_(2)` to lungsC. Returns interslitial fluid back to heartD. Contain RBCs, leucocyte, and more protein as compared to blood |
Answer» Correct Answer - C | |
508. |
The least abundant of the total WBCs areA. MonocytesB. BasophilsC. EosinophilsD. Neutrophils |
Answer» Correct Answer - B | |
509. |
Special cells in the bone marrow that produce thrombocytes areA. B cellsB. T cellsC. MegakaryocytesD. Monocytes |
Answer» Correct Answer - C | |
510. |
Blood pressure in the mammalian aorta is maximum duringA. Diastole of the right atriumB. Systole of the left atriumC. Diastole of the right ventricleD. Systole of the left ventricle |
Answer» Correct Answer - D | |
511. |
Blood pressure in the mammalian aorta is maximum duringA. Diastole of the right ventricleB. systole of the left ventricleC. diastole of the right atriumD. systole of the left atrium |
Answer» Correct Answer - B Upon systole of left ventricle blood is pushed in aorta, which creates systolic blood pressure which is 120 mm Hg. |
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512. |
Which of the following layer of heart is related to difference in thickness of different chambers of heart ?A. Outer fibrous coatB. EpicardiumC. MyocardiumD. Endocardium |
Answer» Correct Answer - C | |
513. |
Which of the following are in direct contact with the AV valves and prevent these from collapsing back into atria ?A. Chordae tendinaeB. Papillary musclesC. Columnae carnaeD. Musculi pentinati |
Answer» Correct Answer - A | |
514. |
Contraction of right ventricle pumps blood intoA. Pulmonary veinB. Pulmonary arteryC. Coronary sinusD. Coronary artery |
Answer» Correct Answer - B | |
515. |
In the given diagram which blood vessel represents vena cava ? RA-Right auricle RV-Right ventricle LA-Let auricle LV-Left ventricle A. CB. DC. AD. B |
Answer» Correct Answer - B | |
516. |
A patch of nodal tissue responsible for initiating the rhythmic contractile activity of heart is present inA. Lower left corner of the left ventricleB. Upper right corner of the right atriumC. Lower left corner of the right ventricleD. Upper left corner of the left atrium |
Answer» Correct Answer - B | |
517. |
All veins carry deoxygenated blood exceptA. Renal arteryB. Hepatic veinC. hepatic portal veinD. Pulmonary veins |
Answer» Correct Answer - D All veins have deoxygented bloos except pulmonary veins. |
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518. |
All veins carry deoxygenated blood exceptA. pulmonary veinB. hepatic veinC. hepatic portal veinD. renal vein |
Answer» Correct Answer - A All veins carry deoxygenated blood from different parts of the body to heart, Pulmonary veins is the only vein that carries oxtgenated blood from the lungs to the left atrium of the heart. |
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519. |
Given these blood vessels 1.Aorta 2. Inferior vena cava 3. Pulmonary arteries 4. Pulmonary veins Which vessels carry oxygen -rich blood ?A. 1,3B. 1,4C. 2,3D. 4,2 |
Answer» Correct Answer - B | |
520. |
In which of the following points pulmonary artery is different form pulmonary vein ?A. larger lumenB. thick muscular wallsC. no endotheliumD. valves |
Answer» Correct Answer - B (b) Arteries have thick walls, narrow lumen but no vlves. Endothelium is present in both arteries and veins. |
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521. |
All veins carry deoxygenated blood exceptA. Renal ateryB. Hepatic veinC. Hepatic portal veinD. Pulmonary veins |
Answer» Correct Answer - D | |
522. |
In which point pulmonary artery is different from pulmonary vein:A. Its lumen is broadB. Its wall is thickC. It has valvesD. It does not passess endothelium |
Answer» Correct Answer - B | |
523. |
Pulmonary artery differs from pulmonary vein in havingA. no endotheliumB. having strong valvesC. having oxygenated bloodD. having thick muscular walls |
Answer» Correct Answer - D | |
524. |
Pulmonary artery differs from pulmonary vein in havingA. Thick wallB. Thin wallC. ValvesD. Both B and C |
Answer» Correct Answer - A Pulmonary artery differs from pulmonary vein in having thick wall. |
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525. |
Pulmonary artery differs from pulmonary vein in havingA. Thick wallB. Thin wallC. ValvesD. Both (2) & (3) |
Answer» Correct Answer - A | |
526. |
Spleen isA. HaemopoeiticB. LymphoidC. ReproductiveD. Celluloid |
Answer» Correct Answer - B | |
527. |
In rabbit function of spleen isA. Blood purificationB. RespirationC. ExcretionD. None of the above |
Answer» Correct Answer - A Macrophages of spleen engulf and destroy wornout blood corpuscles dead and live pathogens, cell Lebris, Pigment gramules and other useless particulate materials, thus regularly cleaning the blood of its impurities. |
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528. |
Red pulp and white pulp are found inA. BoneB. SpleenC. ToothD. Skeletal Muscle |
Answer» Correct Answer - B | |
529. |
Which of the following statements are incorrect ? (i) Leucocytes disintegrate in spleen and liver (ii) RBCs, WBCs and blood platelets are produced by bone narrow (iii) Neutrophils bring about destruction and detoxification of toxins of proteins origin (iv) Important function of lymphocytes is to produce antibodies.A. a and b onlyB. a and d onlyC. a and c onlyD. b and c only |
Answer» Correct Answer - C | |
530. |
Role of spleen of mammals is toA. act as a haemopoietic tissueB. secrete digestive enzymesC. assist kidneysD. produce angioteninogen |
Answer» Correct Answer - A | |
531. |
Which of the following statements are incorrect ? (i) Leucocytes disintegrate in spleen and liver (ii) RBCs, WBCs and blood platelets are produced by bone narrow (iii) Neutrophils bring about destruction and detoxification of toxins of proteins origin (iv) Important function of lymphocytes is to produce antibodies.A. (i) and (ii)B. (i) and (iv)C. (i) and (iii)D. (ii) and (iii) |
Answer» Correct Answer - C Leucocytes disintegrate in blood, liver and lymph nodes. Neutrophils are phagocytic in nature i.e., they engulf harmful germs. |
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532. |
Lymphoid tissue is found inA. ThymusB. TonsilsC. Lymph nodesD. all of these |
Answer» Correct Answer - D | |
533. |
If the spleen is removed from the body of an adult man thenA. Antibody production will be lessB. RBC production will be loweredC. WBC production will be loweredD. Filtration of dead RBC will stop |
Answer» Correct Answer - D | |
534. |
How many times a red blood corpuscle will have to pass through the heart in its journey from hepatic artery?A. only onceB. two timesC. four timesD. several times |
Answer» Correct Answer - B | |
535. |
Prothrombin required for blood clotting is prodced inA. stomachB. liverC. spleenD. pancreas |
Answer» Correct Answer - B | |
536. |
Blood clotting corpuscle isA. thrombocyteB. MonocytesC. lymphocyteD. erythrocyte |
Answer» Correct Answer - A | |
537. |
Which statement is incorrect ?A. mast cells and basophils secrete histamine and heparinB. mast cells are long lived, basophils are short livedC. mast cells are smaller than basophils with a bilobed nucleusD. mast cells are relatively sessile, basophils are mobile |
Answer» Correct Answer - C | |
538. |
In the clotting mechanism pathway , thrombin activates factorsA. XI, VII, VB. XI, IX,XC. VIII, X, VD. IX, VIII,X |
Answer» Correct Answer - A | |
539. |
Which of the following formed element activates the plasma clotting factors ?A. ErythrocytesB. MonocytesC. LymphocytesD. Thrombocytes |
Answer» Correct Answer - D | |
540. |
In the extrinsic clotting pathway the active factor VII activates factorsA. X and XIB. IX and XIC. IX and XD. XI and XII |
Answer» Correct Answer - C | |
541. |
In the clotting mechanism pathway, thromin activates the factorsA. `XI,VIII,V`B. `XI,IX,X`C. `VIII,X,V`D. `IX,VIII,X` |
Answer» Correct Answer - A Thrombin activates factor `XI,V` and `VIII`. This positive feedback accelerates the production of thrombin. |
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542. |
Oxygenated blood is carried by Blood vessels carrying blood from lungs to heartA. Pulmonary veinB. Pulmonary arteryC. Renal veinD. Hepatic portal vein |
Answer» Correct Answer - A The left atrium receives oxygenated blood from the lungs through four of pulmonary veins. |
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543. |
Which vertebrate organ receives only oxygenated bloodA. SpleenB. LiverC. GillD. Lung |
Answer» Correct Answer - A | |
544. |
Mixing of oxygenated and deoxygenated blood occurs in the heart ofA. BirdB. CrocodileC. RabbitD. Frog |
Answer» Correct Answer - D | |
545. |
Systematic circulation of oxygenated blood starts fromA. Right atriumB. Left atriumC. Left ventricleD. Right ventricle |
Answer» Correct Answer - C | |
546. |
What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 mL ?A. 360 mLB. 3600 mlC. 7200 mlD. 5000 ml |
Answer» Correct Answer - b | |
547. |
Decrease in the rate of heart beat, speed of conduction of action potential and thereby the cardiac output is under the control ofA. Neural signals through the sympathetic nervesB. Neural signals through the parasymphathetic nervesC. AdrenalineD. ANS |
Answer» Correct Answer - B | |
548. |
Cardiac output isA. Volume of blood pumped by each ventricle in each cardiac cycleB. Volume of blood pumped out by each ventricle per minuteC. 5 litres in a healthy individualD. Both (2) & (3) |
Answer» Correct Answer - D | |
549. |
How many cardiac cycles are performed per minute in humans ?A. 1B. 12C. 27D. 72 |
Answer» Correct Answer - D | |
550. |
Rise in heart beat, increase in the cardiac output, blood pressure and blood sugar occurs during emergency, by the hormoneA. AldosteroneB. Antidiuretic hormoneC. EpinephrineD. Oxytocin |
Answer» Correct Answer - C | |