What is the role of adrenal medulla ?
Answer (1)
6th Apr, 2020
Hello ,
Role of adrenal medulla is as follows :
The adrenal medulla constitutes of chromaffin cells, which help in secretion of nor-adrenaline/norepinephrine and adrenaline/epinephrine, these are referred to as catecholamines
Adrenaline and nor-adrenaline are rapidly secreted in response to stress of any kind and during emergency conditions and are known as flight or fight hormone or emergency hormones.
- These hormones cause pupillary dialation, enhance alertness , cause piloerection. Both increase heart rate and respiratory rate.
- Catecholamines stimulate the breakdown of glycogen resulting in rise of blood glucose
Hypersecretion of adrenal medulla may occur due to its tumour known as Pheochromocytoma
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