What is the Origin of Physiological Anxiety?

This term separates the objective biological cascade from the subjective psychological experience of anxiety, rooting the concept firmly in endocrinology and autonomic function. It highlights the physical manifestation of stress signaling. The origin emphasizes observable physiological markers.

What is the Mechanism of Physiological Anxiety?

The process begins when perceived threats signal the hypothalamus, initiating the release of CRH, which cascades down to the pituitary and ultimately stimulates the adrenal cortex to secrete cortisol. Simultaneously, the sympathetic nervous system floods the circulation with catecholamines, preparing the body for immediate action. Sustained activation of this pathway profoundly impacts metabolic regulation and immune function.

Physiological Anxiety ∞ Area

Physiological Anxiety

Meaning

Physiological Anxiety describes the objective, measurable state of heightened bodily arousal driven by the activation of the body’s primary stress response systems, distinct from subjective emotional fear alone. This state is characterized by the acute release of potent signaling molecules like epinephrine and norepinephrine from the adrenal medulla. Recognizing this objective activation is key to managing allostatic load.