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प्रश्न
Initiation and stimulation of heartbeat take place by nerves.
विकल्प
True
False
MCQ
सत्य या असत्य
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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 ______.
The wave of expansion of an artery when blood is forced into it is called:
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’.
Why is the Sinoatrial node called the pacemaker of the heart?
Differentiate between systole and diastole.
What is the pulse rate?
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. |
What is pulse?
