Adrenal Medulla

The adrenal medulla is the inner part of the adrenal gland, which is located on top of each kidney. It is an important component of the body's endocrine system and plays a key role in the body's response to stress.

Function

The adrenal medulla is responsible for producing and releasing hormones called adrenaline (epinephrine) and noradrenaline (norepinephrine) in response to stress or danger. These hormones help prepare the body for the "fight or flight" response by increasing heart rate, dilating airways, and redirecting blood flow to important organs.

Regulation

The release of adrenaline and noradrenaline from the adrenal medulla is regulated by the sympathetic nervous system, which is part of the body's autonomic nervous system. When the sympathetic nervous system is activated, it stimulates the adrenal medulla to release these hormones into the bloodstream.

Study Guide

1. What is the adrenal medulla?
2. What are the hormones produced by the adrenal medulla?
3. What is the function of adrenaline and noradrenaline?
4. How is the release of hormones from the adrenal medulla regulated?

Understanding the adrenal medulla is important for comprehending how the body responds to stressful situations and how the endocrine and nervous systems work together to maintain homeostasis.