The chromaffin cell is the principle cell type. An inner medulla, which is a source of the catecholamines epinephrine and norepinephrine. ![]() Inspection of a mammalian adrenal gland that has been sectioned reveals two distinct regions, as demonstrated to the right with a sheep adrenal (click the image to flip between surface and cut views): The exact location relative to the kidney and the shape of the adrenal gland vary among species. Like the kidneys, the adrenal glands lie beneath the peritoneum (i.e. The two adrenal glands are located immediately anterior to the kidneys, encased in a connective tissue capsule and usually partially buried in an island of fat. Endocrine System > Adrenal Glands Functional Anatomy of the Adrenal Gland
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