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प्रश्न
What is pulse?
उत्तर
The pulse is the dilation of an artery during ventricular systole, characterized by alternate expansion and elastic recoil.
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?
Initiation and stimulation of heartbeat take place by nerves.
The closure of the mitral and tricuspid valves at the start of the ventricular systole produces the first sound ‘LUBB’.
Doctors use the stethoscope to hear the sound of the heart. Why?
Explain the process of breathing in man.
Match the parts of the heart in Column I with the direction of the 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 ______.
