BIOM 4030 Study Guide - Midterm Guide: Growth Hormone–Releasing Hormone, Supraoptic Nucleus, Pars Tuberalis

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 4030
• Professor: Pawel Bartlewski

Document Summary

Endocrine organs: pituitary (hypophysis), pineal, thyroid, parathyroid, adrenal glands. E(cid:374)docri(cid:374)e cell groups i(cid:374) (cid:862)(cid:374)o(cid:374)-e(cid:374)docri(cid:374)e(cid:863) orga(cid:374)s: hypothala(cid:373)ic (cid:374)eurosecretory neurons, pancreatic islets, theca interna, granulosa cells and corpus luteum in ovary, jga of kidney, atrial cardiac muscle cells. Single cells scattered in respiratory and gi tract. Links endocrine to environment via the brain. Hypothalamus = main regulatory center in midbrain; paraventricular nucleus and supraoptic nucleus. Integrates internal & external signals and communicates changes via hormones. Pituitary gland encased in sphenoid bone at base of brain. Response of target is either releasing another hormone (endocrine) or change/grow then feedback negatively to stop signal (non-endocrine) Stimulate or inhibit hormone release from pituitary. Neuronal portion develops from outgrowth of hypothalamus (neuroectoderm), forms neurohypophysis (forms posterior pituitary) Glandular portion develops from oropharynx ectoderm (rathke"s pouch) forms adenohypophysis (anterior pituitary) Pars intermedia (zone between anterior and posterior, disappears in adulthood) Pars tuberalis (sleeve around median eminence, part of posterior pituitary) Hypothalamo-neurohypophysial system = hypothalamus and posterior pituitary.