![]() ![]() The cortex secretes a different group of hormones known as the corticosteroids. ![]() The effects of these hormones include increasing the heart rate and breathing rate, constricting blood vessels and dilating the airways so that a person can react appropriately to the environmental stress. Both these hormones are catecholamines that play significant roles in increasing the body’s ability to cope with sudden changes in the environment like emergency situations as part of the fight-or-flight response. The medulla secretes the hormones epinephrine and norepinephrine when stimulated by the sympathetic system. It has two distinct portions – the smaller inner adrenal medulla surrounded by the large outer adrenal cortex. The adrenal glands, also known as the suprarenal glands, are two small structures that lie on the superior poles of each kidney. ![]()
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