The hormones of the inner adrenal medulla, on the flip side, are released because of the several nerve signals for the stress reaction (response). The hormones of the outer adrenal cortex are released by virtue of ACTH and are stimulated by the anterior pituitary gland. The inner adrenal medulla, on the other hand, releases two major hormones which include the adrenaline (epinephrine) and the noradrenaline (norepinephrine).

The outer adrenal cortex releases three types of hormones, i.e., the mineralocorticoids, the glucocorticoids, and the androgens. Both of them release or secrete different types of hormones. The adrenal cortex is the outermost portion of the adrenal gland, whereas, the adrenal medulla of the adrenal gland is the inner or middle layer of it. The names of these two particular regions tell about their location. There are basically two endocrine organs which are present in the adrenal gland, in which one surrounds the other. If we know our anatomy, then there is really no problem in describing these two regions. Each adrenal gland consists of two parts, i.e., the external adrenal cortex and the inner adrenal medulla. Adrenal MedullaĪdrenal glands are the paired structures that are located on the top of the kidneys. The sympathetic nervous system functions with the adrenal medulla as an integrated system which is called as the sympatheticoadrenal system.ĪDVERTISEMENT Adrenal Cortex vs. It releases two major hormones, which include the adrenaline (epinephrine) and the noradrenaline (norepinephrine).Īdrenal cortex has no cooperation with the sympathetic nervous system. It releases three types of hormones which include the mineralocorticoids, the glucocorticoids, and the androgens. The nerve impulses which are reaching through the sympathetic nerve fibers are responsible for stimulating the adrenal medulla to release its hormones. The ACTH of the anterior lobe of the pituitary gland is responsible for the stimulation of adrenal cortex to release its hormones.

Its destruction does not result in death. The adrenal medulla is not differentiated into zones or regions. The adrenal cortex contains three zones or regions. The adrenal medulla is developed from the ectodermal layer. The adrenal cortex is developed from the mesodermal layer. It constructs about 25% of the adrenal gland.įibrous capsule does not cover the adrenal medulla. It constructs about 75% of the adrenal gland. It is the central soft part of the adrenal gland. It is the outer rigid portion of the adrenal gland. The inner or middle part of the adrenal gland is called adrenal medulla.

The outermost covering of the adrenal gland is called adrenal cortex. Adrenal cortex has no cooperation with the sympathetic nervous system, on the flip side, the sympathetic nervous system functions with the adrenal medulla as an integrated system which is called as the sympatheticoadrenal system.

Adrenal cortex adrenal medulla