Adrenal Medulla

The adrenal medulla is the inner part of the adrenal gland, which is located on top of the kidneys. It plays a crucial role in the body's response to stress and is part of the sympathetic nervous system.

Function

The adrenal medulla is responsible for producing and releasing hormones called adrenaline (epinephrine) and noradrenaline (norepinephrine). These hormones are released in response to stress, fear, or excitement, and they help the body respond to these situations by increasing heart rate, dilating airways, and redirecting blood flow to essential organs.

Role in Fight or Flight Response

When the body perceives a threat or danger, the adrenal medulla is activated, leading to the release of adrenaline and noradrenaline. These hormones trigger the "fight or flight" response, preparing the body to either confront the threat or flee from it. This response is essential for survival in dangerous situations.

Study Guide

1. What is the adrenal medulla and where is it located?
2. What hormones are produced by the adrenal medulla?
3. What is the role of adrenaline and noradrenaline in the body's response to stress?
4. Explain the fight or flight response and the role of the adrenal medulla in it.

Understanding the function of the adrenal medulla is important for comprehending the body's response to stress and the physiological mechanisms involved in the fight or flight response.

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