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प्रश्न
Initiation and stimulation of heartbeat take place by nerves.
पर्याय
True
False
MCQ
चूक किंवा बरोबर
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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
The rhythmic expansion and contraction of the heart is called ______.
What is meant by 'heart beat'? What is the usual heart beat rate at rest?
What are heart sounds? How are they produced?
Explain the conduction of heartbeat.
Explain the process of breathing in man.
Observe figure and answer the given questions:
- Name the instrument.
- Label parts A, B and C.
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 ______.
What is pulse?
