Catecholamines: Epinephrine and Norepinephrine

Catecholamines are hormones produced by the adrenal gland in response to stress. The two primary catecholamines are epinephrine and norepinephrine. These hormones are involved in the body's "fight or flight" response, which prepares the body for physical activity.

Functions of Epinephrine and Norepinephrine

Epinephrine and norepinephrine have several functions in the body, including:

1. Increasing heart rate and blood pressure: Epinephrine and norepinephrine cause the heart to beat faster and harder, increasing blood flow to the body's organs.

2. Dilating airways: These hormones also relax the muscles in the airways, making it easier to breathe.

3. Mobilizing glucose: Epinephrine and norepinephrine stimulate the liver to release glucose into the bloodstream, providing energy for physical activity.

4. Constricting blood vessels: These hormones cause blood vessels to constrict, redirecting blood flow to the organs that need it most during physical activity.

5. Enhancing mental alertness: Epinephrine and norepinephrine can also improve mental alertness and focus.

Epinephrine and Norepinephrine Together

Epinephrine and norepinephrine are often referred to as "stress hormones" because they are released in response to stress. These hormones work together to prepare the body for physical activity, ensuring that the body has the energy and resources it needs to handle the stressor.

Epinephrine is released in response to acute stress, such as a sudden loud noise or a perceived threat. Norepinephrine is released in response to chronic stress, such as ongoing work-related stress or financial worries.

In summary, epinephrine and norepinephrine are two important catecholamines that work together to prepare the body for physical activity in response to stress. They have several functions in the body, including increasing heart rate and blood pressure, dilating airways, mobilizing glucose, constricting blood vessels, and enhancing mental alertness.

Epinephrine and nor epinephrine are two neurotransmitters which are together known as catecholamine