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प्रश्न
What is meant by the term 'double circulation' of blood in mammals? What is diastole?
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उत्तर
Blood flows twice in the heart before it completes one full cycle. This process of blood circulation in the human body is called double circulation.
The expansion or relaxation phase of the atria is called a diastole.
संबंधित प्रश्न
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Complete the following sentence with appropriate word:
The membranous covering of the heart is _______.
Identify the INCORRECT match
