Neuroendocrinology
Neuroendocrinology studies how the nervous system and endocrine system communicate and jointly regulate physiology and behavior.
Hypothalamic–pituitary axis: A set of neural and hormonal pathways linking the hypothalamus, pituitary gland, and peripheral endocrine glands. It is the main route through which brain signals control endocrine glands.
Hypothalamus: A brain region that regulates homeostasis, autonomic activity, and pituitary hormone release. It integrates neural information and initiates many endocrine responses.
Stress: A coordinated physiological and behavioral response to demands or threats. Neuroendocrine pathways translate perceived threats into bodily stress responses.
Geoffrey Harris: A British physiologist who established the concept of hypothalamic control of pituitary secretion. His work laid the foundation for modern neuroendocrine regulation.
Neuroscience: The scientific study of the nervous system, including its structure, function, development, and disorders. Neuroendocrinology adds endocrine communication to neuroscience's broader study of neural systems.
Neurosecretion: The release of hormones or neuropeptides into the blood by neurons. It shows how a neuron can act directly as an endocrine cell.
Pituitary gland: An endocrine gland beneath the hypothalamus that releases hormones regulating growth, reproduction, and other glands. It relays hypothalamic control to multiple endocrine targets.
Reproductive endocrinology: The study of hormones and endocrine organs involved in reproduction. Reproductive hormones interact with brain circuits controlling fertility and sexual behavior.
Roger Guillemin: A French-American endocrinologist who isolated hypothalamic factors regulating pituitary hormones. His biochemical studies identified the messengers predicted by hypothalamic control theories.
Endocrinology: The medical and biological study of hormones, endocrine glands, and related disorders. Neuroendocrinology focuses on nervous-system interactions beyond endocrinology's broader remit.