CBSE Class 10 Answered
why do we need a pumping organ
and
define cardiac cycle
Asked by sreekumar1974 | 18 Jul, 2019, 03:20: PM
Expert Answer
Pumping organ like heart is essential to circulate blood throughout the body. The pumping organ pushes blood through a network f blood vessels to the tissues of the body so that it reaches the farthest part of the body.
The cardiac cycle comprises a complete relaxation and contraction of both the atria and ventricles, and lasts approximately 0.8 seconds.
Answered by Sheetal Kolte | 18 Jul, 2019, 05:37: PM
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