CBSE Class 12-science Answered

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Answer to one of your questions is given below:

The cardiovascular centre is a part of the human brain situated in the medulla oblongata. It is responsible for the regulation of the rate at which the heart beats, through the nervous system and the endocrine systems. Normally, the heart beats without nervous control, but in some situations such as physical exercise, body trauma etc., the cardiovascular centre is responsible for altering the rate at which the heart beats. It also mediates variations in heart rate which occur during the breathing cycle.

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