Changes

3. zona reticularis

3. zona reticularis

These zones all produce hormones derived from cholesterol, which is abundant in the cells. The '''adrenal cortex''' represents 80-90% of the adrenal gland.  

All these zones produce hormones derived from cholesterol, which is abundant in the cells. The '''adrenal cortex''' represents 80-90% of the adrenal gland.  

The '''adrenal medulla''' is primarily involved in the production of catecholamines; epinephrine and norepinephrine. In fetal life, the adrenal medulla plays a role in the autonomic nervous system. The medulla acts as a sympathetic ganglion with the postganglionic cells lacking axons. Through sympathetic preganglionic fiber stimulation, the medullary cells secrete catecholamines. The adrenal medulla represents only 10-20% of the adrenal gland.

The '''adrenal medulla''' is primarily involved in the production of catecholamines; epinephrine and norepinephrine. In fetal life, the adrenal medulla plays a role in the autonomic nervous system. The medulla acts as a sympathetic ganglion with the postganglionic cells lacking axons. Through sympathetic preganglionic fiber stimulation, the medullary cells secrete catecholamines. The adrenal medulla represents only 10-20% of the adrenal gland.