What is the Origin of Resource Mobilization Signal?

The term is grounded in stress endocrinology and metabolic physiology, describing the physiological response to anticipated or actual energy need. The signal is essentially the efferent arm of the stress response, mediated by the autonomic nervous system and the adrenal glands. It formalizes the biological mechanism by which the body shifts from a state of storage to a state of expenditure.

What is the Mechanism of Resource Mobilization Signal?

The primary signal is the rapid increase in catecholamines, such as epinephrine and norepinephrine, and the concurrent rise of cortisol. Catecholamines bind to adrenergic receptors on adipocytes and hepatocytes, stimulating lipolysis and glycogenolysis, respectively. Cortisol supports this action by modulating gene expression to sustain substrate availability and enhance the effects of the catecholamines. This coordinated release ensures that the brain and muscle tissues have the necessary fuel to execute complex tasks.

Resource Mobilization Signal ∞ Area

Resource Mobilization Signal

Meaning

Resource Mobilization Signal refers to the acute hormonal and neurochemical cascade that prompts the body to release stored energy substrates, primarily glucose and fatty acids, into the circulation for immediate use by active tissues. This signal is a fundamental component of the “Active Phase Preparation,” designed to meet the energy demands of physical activity, cognitive tasks, or acute stress. A robust and well-timed signal is crucial for performance and preventing energy crises.