InterviewSolution
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InterviewSolution
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.
| 51. |
Write short note on the following. (a) Hypertension (b) Coronary Artery Disease |
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Answer» Hypertension The high blood pressure can harm heart. brain kidneys and eyes High blood pressure is most common disease affecting the heart and blood vessels, Blood pressure is considered normal at 120/80. When it goes beyond 140 mm Hg and 90 mm it is called hypertension or high blood pressure. Causes of Hypertension (i) Blockage in the coronary heart vessles (ii) Tobacco smoking speeds up heart rate.It constrict blood vessels and raises blood pressure. (b ) Coronary Artery Disease (CAD) It is caused due to the deposition of fatty substances on the aterial wall causing atherosclerotic plaques.The lumen of artey decreases,thus obstructing the blood flow and sometimes completely blocks the artery resulting into thus ,heart attack. |
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| 52. |
Coronary heart disease is due toA. Streptococci bacteriaB. inflammation of pericardiumC. weakening of the heart valvesD. insufficient blood supply to the heart muscles |
| Answer» Correct Answer - D | |
| 53. |
Coronary heart disease is due toA. Weakening of heart valvesB. Insufficient blood supply to heart musclesC. Streptococci bacteriaD. Inflammation of pericardium |
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Answer» Correct Answer - B Cornary heat disease is due to insuffcient blood supply to heart muscles. |
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| 54. |
Another name of coronary artery disease is _____ |
| Answer» Correct Answer - Atherosclerosis | |
| 55. |
In the heart of mammals the bicuspid valve (mitral valve) is situated betweenA. Left auricle and left ventricleB. Post caval and right cavalC. Right auricle and left auricleD. Right ventricle and pulmonary aorta |
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Answer» Correct Answer - A The bicuspid valve is a valve consisting of two membranous flap or cups situated between the atrium and ventricle of the left side of the heart in mammals. |
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| 56. |
Name the enzyme that catalyses the formation of carbonic acid in erythrocytes. |
| Answer» Carbonic anhydrase. | |
| 57. |
The RBC membrane of a person contains no antigen. His blood group will beA. AB. BC. ABD. O |
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Answer» Correct Answer - D The RBC membrane of a person contains no antigen. His blood group will be O. |
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| 58. |
Antigen are presentA. inside the nucleusB. on cell surfaceC. inside the cytoplasmD. on nuclear membrane |
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Answer» Correct Answer - B (b) Antigens (Ag ) are foreign particles present on the surface of cell and when introduced in the blood they initiate a specific immune response against themselves. |
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| 59. |
The lymph serves toA. transport oxygen to the brainB. transport carbon dioxide to the lungsC. return the interstitial fluid to the bloodD. return the WBCs and RBCs to the lymph nodes |
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Answer» Correct Answer - C (c ) Lymph acta as a middle man between the blood and tissue cells. Lymph is a tranparent fluid derived from blood and other tissues which accumulates in the interstitial spaces as the interstitial fluid and it passes on food and `O_(2)` from blood to tissue cells and handed ones excretory wates, hormones and `CO_(2)` form the body cells to the blood. |
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| 60. |
The lymph serves toA. return the interstitial fluid to the bloodB. return he WBCs and RBCs to the lymph nodesC. transport `CO_(2)` to the lungsD. transport `O_(2)` to the brain. |
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Answer» Correct Answer - A Lymph return the interstitial fluid back to the blood, This interstitial fluid, also called extracellular fluid, is filtered from og blood without its cellular component. |
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| 61. |
The lymph serves toA. Transport `O_(2)` to the brainB. Transport `CO_(2)` to the lungsC. Return the interstitial fluid to the bloodD. Return the WBCs and the RBCs to the blood |
| Answer» Correct Answer - C | |
| 62. |
Thromboplastin is secreted byA. PlateletsB. LymphokinesC. Helper T cellsD. Mast cells |
| Answer» Correct Answer - A | |
| 63. |
Which of the following statements is incorrect ?A. Veins are typically larger in diameter than arteriesB. Because of their small size, blood flows more rapidly in capillaries than in other parts of circulatory systemC. Wall of arteries are elastic enabling them to stretch and shrink during changes in blood pressureD. Veins contain more blood than any other part of circulatory system |
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Answer» Correct Answer - B On an average, capillaries are about 1 mm long and 8 mm in diameter. Although each capillary is very narrow, there are so many of them that the capillaries have the greatest total cross-sectional area of any other type of vessel. Consequently, the blood decreases in velocity as it passes through the capillary beds, allowing more time for it to exchange materials with the surrounding extracellular fluid. Blood also loses most of its pressure in passing through the vast capillary networks and so is under very low pressure when it enters the veins. |
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| 64. |
Which correctly pairs an ECG phase with the cardiac event responsible ?A. P wave -Depolarization of the ventriclesB. P wave -Depolarization of the AV nodeC. QRS wave-Depolarizatiion of the ventriclesD. T wave-Repolarization of the atria |
| Answer» Correct Answer - C | |
| 65. |
Time interval between the closure of semilunar valve and closure of AV valve isA. 0.3 sB. 0.5 sC. 0.1 sD. 0.7 s |
| Answer» Correct Answer - B | |
| 66. |
If one litre of blood is drawn out of 5 litres from the body of man, how much blood would be left by the next day ?A. 5 litresB. 4.5 litresC. 4 litresD. 3 litres |
| Answer» Correct Answer - A | |
| 67. |
What is an artificial pacemaker ? Explain. |
| Answer» Artificial pacemaker is an instrument that stimulates the heart electrically at regular intervals to beat at normal rate. | |
| 68. |
Battery of artificial pacemaker is built ofA. NickelB. LithiumC. Photosensitive materialD. Dry Cadmium |
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Answer» Correct Answer - B Battery of artificial pacemakeer is built of lithium. |
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| 69. |
The cardiac pacemaker in a patient fails to function normally. The doctors find that an artifical pacemaker is to be grafted in him. It is likely that it will be grafted at the site of `-`A. Antrioventricular bundleB. Purkinje systemC. Sinoatrial nodeD. Atrioventricular node |
| Answer» Correct Answer - C | |
| 70. |
Artificial pacemaker is usually implanted to correct the defect inA. AV nodeB. SA nodeC. Purkinjr fibresD. Mitral valve |
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Answer» Correct Answer - B Artificial pacemaker is usually implanted to correct the defect in SA node. |
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| 71. |
Artificial pacemaker is required when a person is sufering fromA. ArteriosclerosisB. AthereosclerosisC. Irregularity of heart beatD. Hypertension |
| Answer» Correct Answer - C | |
| 72. |
Rh factor is concented to species of monkyA. Macoca radiataB. Presbytes rhesusC. Macaca rhesusD. Macaca mulatta |
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Answer» Correct Answer - C Rh factor is connected to species of monkey Macaca rhesus. |
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| 73. |
Rh factor was discovered byA. Landsteiner and WeinerB. William HarveyC. MalpighiD. none of these |
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Answer» Correct Answer - A Rh factor was discovered by Landstreiner and Weiner in 1940 in Rhesus monkey. |
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| 74. |
Rh factor occurs inA. All reptilesB. Man and Rhesus MonkeyC. All mammalsD. All vertebrates |
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Answer» Correct Answer - B Rh factor occurs in man and rhesus monkey. |
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| 75. |
What is a clot or coagulum ? |
| Answer» A clot or coagulum is formed mainly of a network of threads called fibrins in which dead and damaged formed elements of blood are trapped. | |
| 76. |
Erythropoiesis starts inA. SpleenB. Red bone marrowC. KidneyD. Liver to kidney |
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Answer» Correct Answer - B Erythropoiesis starts in red bone marrow |
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| 77. |
What is Rh factor ? |
| Answer» Rh factor is a group of antigens found on the red blood cells of majority of people. | |
| 78. |
Erythropoiesis starts inA. Red bone marrowB. KidneyC. LiverD. Spleen |
| Answer» Correct Answer - C | |
| 79. |
In adults, erythropoiesis occurs inA. LiverB. Red bone marrowC. SpleenD. Yellow bone marrow |
| Answer» Correct Answer - B | |
| 80. |
Erythropoiesis starts inA. liverB. SpleenC. Red bone marrowD. Kidney |
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Answer» Correct Answer - C As per CBSE website the Ans is (c). (a and b) Erythropoiesis starts earliest in yolk sac which is not given in the options. After that both options (a) Liver and (b) Spleen are correct . (Reference -Text Book of Medical Physiology by Guyton and Hall) "Production of Red Blood Cells- In the early few weeks of embryonic life, RBC are produced in the yolk sac. During the middle trimester of gestation, liver is the main organ, although a reasonable number of RBCs are produced in the Spleen and Lymph nodes. Then during the last month or so of gestation and after birth, RBCs are produced exclusively in the Bone marrow." |
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| 81. |
How is lymph filtered ? |
| Answer» Lymph is filtered in the lymph nodesb as they contain phagocylic cells which help to remove pathogens. | |
| 82. |
What is erythropoiesis ? |
| Answer» The formation of RBCs is known as erythropoiesis. | |
| 83. |
What are sinuses ? |
| Answer» Sinuses are open spaces or body cavities. | |
| 84. |
What is globulins ? |
| Answer» Globulins are the plasma proteins which are primarily involved in immunity. | |
| 85. |
What is leucocytosis ? |
| Answer» Increase in the WBC count is called leucocytosis. | |
| 86. |
What is diapedesis ? |
| Answer» The movement of leucocytes through capillary walls to the site of infection is known as diapedesis. | |
| 87. |
Diapedesis isA. Bursting of WBCB. Production of pusC. Producteion of WBCD. Passage of WBC out of blood capillaries to the site of injury |
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Answer» Correct Answer - D Diapedesis is passage of WBC out of blood capillaries to the site of injury. |
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| 88. |
Diapedesis is the characteristic feature ofA. MonocytesB. B - lymphocytesC. T - lymphocytesD. All of these |
| Answer» Correct Answer - A | |
| 89. |
An enzme complex with if formed by a series of linked enzymic reactions (cascade process) is calledA. ThrombinB. ProthrombinC. ThrombokinaseD. Fibrinogen |
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Answer» Correct Answer - C An enzyme complex with is formed by a series of linked enzmic reactions (cascade process) is called thrombokinase. |
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| 90. |
Colt is formed mainly of a network of threads calledA. FibrinogenB. PorothrombinC. ThrombinD. Fibrin |
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Answer» Correct Answer - D Colt is formed mainly of a network of threads called fibrin. |
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| 91. |
Fastest distribution of some injectible meterial`//`medicine and with no risk of any kind can be achieved by injecting it into theA. ArteryB. VeinC. MuscleD. Lymph vessel |
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Answer» Correct Answer - B Fastest distribution of some injectable material/medicine and with no risk of any kind can be achieved by injecting it into vein. |
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| 92. |
Fastest distribution of some injectible meterial`//`medicine and with no risk of any kind can be achieved by injecting it into theA. musclesB. arteriesC. veinsD. lymph vessels |
| Answer» Correct Answer - C | |
| 93. |
Bulk of carbon dioxide `(CO_(2))` released from body tissues into the blood is present asA. bicarbonate in blood plasma and RBCsB. free `CO_(2)` in blood plasmaC. 70% carbamino-haemoglobin and 30% as bicarbonateD. carbomino-haemoglobin in RBCs |
| Answer» Correct Answer - A | |
| 94. |
The main difference in the structure of arteries and veins is inA. Tunica intima, made up of simple squamous epitheliumB. Tunica mediaC. Tunica ExternaD. Tunica adventitia |
| Answer» Correct Answer - B | |
| 95. |
PH of blood in arteries and veins isA. Higher in arteries and lower in veinsB. Higher in veins and lower in arteriesC. Same in bothD. Variable in both |
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Answer» Correct Answer - A pH of blood is higher in arteries and lower in veins. |
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| 96. |
The second heart sound (dubb) is associated with the closure ofA. Tricuspid valveB. Semilunar valvesC. Bicuspid valveD. Tricuspid and bicuspid valves. |
| Answer» Correct Answer - B | |
| 97. |
The second heart sound (dubb) is associated with the closure ofA. tricuspid valveB. semilunar valvesC. biscuspid valveD. tricuspid and biscuspid valves |
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Answer» Correct Answer - B During beginning of venticular diastole the ventricles relax and the semilunar valves are closed. This causes the second heart sound (dubb). |
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| 98. |
The second heart sound (dubb) is associated with the closure ofA. Tricuspid valveB. Semilunar valvesC. Bicuspid valveD. Tricuspid and bicuspid valves |
| Answer» Correct Answer - B | |
| 99. |
Which of the following correctly explains a phase`//`event in cardiac cycle in a standard electrocardiogramA. QRS complex indicated atrial contrationB. QRS complex indicates ventricular contractionC. Time between S and T represents atrial systoleD. P-wave indicates beginning of ventricular contraction |
| Answer» Correct Answer - B | |
| 100. |
Which of the following is the diagrammatic representation of standard electrocardiogram (ECG) ?A. B. C. D. |
| Answer» Correct Answer - D | |