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प्रश्न
Initiation and stimulation of heartbeat take place by nerves.
पर्याय
True
False
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उत्तर
This statement is False.
Explanation:
Initiation and stimulation of heart beat take place by Sino-atrial node.
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संबंधित प्रश्न
Why do we sweat more in summer?
The closure of the mitral and tricuspid valves at the start of the ventricular systole produces the first sound ‘LUBB’.
What are heart sounds? How are they produced?
Why is the Sinoatrial node called the pacemaker of the heart?
Differentiate between systole and diastole.
Explain the conduction of heartbeat.
Doctors use the stethoscope to hear the sound of the heart. Why?
Match the parts of the heart in Column I with the direction of flow of blood in Column II.
| Column I | Column II | ||
| (i) | Right ventricle | (a) | Pushes blood into the pulmonary artery. |
| (ii) | Pulmonary veins | (b) | Take deoxygenated blood from the heart to the lungs. |
| (iii) | Left atrium | (c) | Receives blood from different parts of the body. |
| (iv) | Pulmonary arteries | (d) | Bring oxygenated blood from the lungs to the heart. |
| (v) | Left ventricle | (e) | Pushes blood into the aorta. |
| (vi) | Right auricle | (f) | Receives deoxygenated blood from the pulmonary veins. |
The 'Lub' and "Dub" heart sound are due to ______.
The heart sound 'Dub' is produced when ______.
