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Q. No.A cardiovascular centre that can moderate the cardiac function through the autonomic neural system is located in the:
1.
Pons varoli
2.
Medulla oblongata
3.
Hypothalamus
4.
Cerebrum
Subtopic: Regulation of Cardiac Activity |
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A drop of each of the following is placed separately on four slides. Which of them will not coagulate?
| 1. | Whole blood from pulmonary vein |
| 2. | Blood plasma |
| 3. | Blood serum |
| 4. | Sample from the thoracic duct of lymphatic system |
Subtopic: Blood: General Description & RBC |
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In a cardiac cycle, joint diastole state correctly means:
| 1. | only the two atria are in a relaxed state |
| 2. | only the two ventricles are in a relaxed state |
| 3. | ventricles and atria are in a relaxed state |
| 4. | only the left atrium and the left ventricle are in a relaxed state |
Subtopic: Human Heart: Cardiac Cycle |
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Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body.
| 1. | Erythrocytes | 2. | Leucocytes |
| 3. | Neutrophils | 4. | Thrombocytes |
Subtopic: Blood: Blood Clotting |
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Cardiac output can be increased by:
| I: | Neural signals through sympathetic nerves |
| II: | Neural signals through parasympathetic nerves |
| III: | Adrenal medullary hormones |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II and III |
Subtopic: Regulation of Cardiac Activity |
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Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when
| 1. | AV valves open up |
| 2. | Ventricular walls vibrate due to gushing in of blood from atria |
| 3. | Semilunar valves close down after the blood flows into vessels from ventricles |
| 4. | AV node receives the signal from SA node |
Subtopic: Human Heart: Cardiac Cycle |
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A woman is tested for hemoglobin level in her blood and reports showed that the level of Hg is 9 gm in 100 ml of blood. It indicates:
| 1. | Normal level |
| 2. | More than normal level |
| 3. | Less than normal level |
| 4. | Very less than normal level |
Subtopic: Blood: General Description & RBC |
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Which of the following is not related to the regulation of cardiac activity?
| 1. | Neural signals through the sympathetic nerves can increase the rate of heartbeat |
| 2. | Parasympathetic neural signals decrease the rate of heartbeat |
| 3. | Neural signals through the sympathetic nerves can decrease the rate of heartbeat |
| 4. | Adrenal medullary hormones increase the cardiac output |
Subtopic: Regulation of Cardiac Activity |
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Which of the following valves is also known as the ‘Mitral’ valve?
| 1. Right atrio-ventricular | 2. Left atrio-ventricular |
| 3. Aortic semilunar | 4. Pulmonic semilunar |
Subtopic: Human Heart: Cardiac Cycle |
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The stroke volume of left ventricle in a person is 75 ml. His cardiac output is 6000 ml. What will be his heart rate?
| 1. | 72 per minute | 2. | 75 per minute |
| 3. | 80 per minute | 4. | 100 per minute |
Subtopic: Human Heart: Cardiac Cycle |
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