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A pedestrian narrowly avoids being hit by an oncoming car. He notices that it takes a little while for his heart rate and respiratory rate to return to normal. This is likely because

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Tundexi

It will take a little time for the heart rate and respiratory rate to return to normal because of activation of the adrenal medulla which released epinephrine(adrenaline) and norepinephrine into the bloodstream.

The adrenal medulla is the part of adrenal gland which controls release of hormones to initiate a flight or fight response.

The release of the epinephrine and norepinephrine is activated through the adrenal medulla.

Hence, It will take a little time for the heart rate and respiratory rate to return to normal because of activation of the adrenal medulla which released epinephrine(adrenaline) and norepinephrine into the bloodstream.

Read more about adrenal medulla:

brainly.com/question/7781659

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