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प्रश्न
The rhythmic expansion and contraction of the heart is called ______.
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उत्तर
The rhythmic expansion and contraction of the heart is called heartbeat.
Explanation:
The heartbeat ensures the continuous flow of blood, delivering oxygen and nutrients to the body while removing waste products.
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संबंधित प्रश्न
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’.
Differentiate between systole and diastole.
Explain the conduction of heartbeat.
Doctors use the stethoscope to hear the sound of the heart. Why?
What is the pulse rate?
Explain the process of breathing in man.
Observe figure and answer the given questions:
- Name the instrument.
- Label parts A, B and C.
The 'Lub' and "Dub" heart sound are due to ______.
The heart sound 'Dub' is produced when ______.
