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Sympathoadrenal system is a term used to describe the sympathetic nervous system and the adrenal medulla as a unified entity. This system plays a crucial role in the body's response to stress and exercise.

Overview

The sympathetic nervous system is a part of the autonomic nervous system that primarily functions to prepare the body for intense physical activity, often referred to as the "fight or flight" response. The adrenal medulla, on the other hand, is the inner part of the adrenal gland that produces hormones like adrenaline and noradrenaline, which are released into the bloodstream during times of stress or danger.

Function

The sympathoadrenal system is activated in response to stressors, leading to the release of catecholamines (adrenaline and noradrenaline) from the adrenal medulla. These hormones increase heart rate, blood pressure, and blood glucose levels, preparing the body for a quick response to the perceived threat.

Role in Disease

Dysfunction of the sympathoadrenal system can lead to various health conditions. For instance, pheochromocytoma is a rare tumor of the adrenal medulla that can cause excessive production of catecholamines, leading to high blood pressure and other symptoms.

See Also

• Adrenal gland
• Sympathetic nervous system
• Stress (biology)
• Pheochromocytoma

References

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