04/04/2026
Ever wondered what happens when we have a fight, flight, fawn or freeze stress response? Also known as an the Hypothalamic-Pituitary-Adrenal (HPA) axis is the body’s primary, long-term stress response system, linking the central nervous system to the endocrine system. It involves a chain reaction between the hypothalamus, pituitary gland, and adrenal glands, resulting in the release of cortisol to manage energy, mood, and immune response. Its key functions are to protect and keep us safe.
The nervous system is the control and communication network of the human body.
It includes the brain, spinal cord, and a vast network of nerves that connect every part of the body.
This system is responsible for processing information, generating thoughts, and coordinating actions.
It allows you to sense your environment, react to changes, and control movements.
Together, it keeps the body functioning, responsive, and aware at all times.
Key Components and Function
The Hypothalamus part of the: Detects stress and releases corticotropin-releasing hormone (CRH).
Pituitary (Master) Gland: Triggered by CRH to secrete adrenocorticotropic hormone (ACTH).
Adrenal Glands: Activated by ACTH to produce and release cortisol, the "stress hormone".
Function: Cortisol increases blood sugar, prepares muscles, and modulates metabolism to handle stress. 💚