The adrenal glands are approximately two
and half by one inch long yellowish-orange colored glands that are found
just above the kidneys. Adrenal glands provide a very important function
in protecting the body against stress. This function is carried out by
secretion of a number of different types of hormones by the adrenal gland.
Adrenal cortex
The adrenal gland is actually two glands that are fused together into
one gland. The outer part of the adrenal gland also called the adrenal
cortex produces steroid hormones that are involved in regulating
a number of different body functions.
The adrenal cortex also produces a hormone called aldosterone that is
involved in regulating the amount of salt and water in your body.
Adrenal medulla
The inner part of the adrenal gland is called the adrenal medulla. The
adrenal medulla produces hormones called catecholamines such as
adrenaline and noradrenaline. Catecholamines play a role in the
response to acute or sudden severe stress, for example during life threatening
event.
Catecholamines are responsible for the palpitations (racing heart), sweatiness,
widening of eyes and shakiness of the hand when faced with sudden fear
or other stressful situation.
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