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प्रश्न
Answer in only one sentence of the following question:
Mention the role of the pacemaker in human heart.
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उत्तर
- The Sinu-auricular (SA) node is the pacemaker of the heart.
- It generates wave of contraction which spread along the wall of atria and bring about their contraction.
- It has highest degree of rhythmicity and is the first to originate the cardiac impulses and determine the rate of heart beat.
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संबंधित प्रश्न
Fill in the blank with suitable word given below:
The blood loaded with carbon dioxide from the body comes into the __________ of the heart.
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The phase of cardiac cycle in which the auricles contract
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Pick out the odd one.
heart, legs, brain, kidney
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Valves are present in ______.
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