KINESIOL 2YY3 Lecture Notes - Lecture 12: Thyrotropin-Releasing Hormone, Posterior Pituitary, Anterior Pituitary
30 Jun 2017
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Document Summary
Anterior pituitary: glandular tissue, consists of clusters of cells specific to secretion of hormones. Hypothalamus part of the nervous system that secretes a set of hormones that travel through the cv system a short distance (capillary network secretes inhibitory factors that direct clusters of cells to release/not release hormones) 2 hormones signal clusters of cells to not synthesize hormones: somatostatin functions to inhibit secretion of growth hormone, prolactin-inhibiting hormone. Mechanism to monitor release of growth hormone through the body, as well as prolactin (regulation) Other 3 hormones are just releasing factors though. Infundibulum posterior side made up of hypothalamic axons that when stimulated trigger release from nerve endings releases two different hormones directly into cv system. Vein that leaves the posterior pituitary carries secretions of nerve endings. On anterior side, hypothalamic neurons do not extend into anterior pituitary, signal for anterior to release hormones comes from cv system (portal system: capillary network to capillary network)
