advanced pathophysiology NR 507 | Questions with 100 % correct Answers | Verified

Fat Soluble Hormones - Steroids Water Soluble Hormones - Need 2nd Messenger to transport across phospholipid membranes Pituitary Hormones - TSH, GH, ACTH, FSH, LH, Oxytocin, ADH, Melanocyte Stimulating Hormone Anterior Pituitary - Acct for 75% of total weight of pituitary gland. Three regions, pars distalis, parts tuberalis, and pars intermedia. Pars distalis is major component of Anterior Pituitary and source of Anterior Pituitary Hormones. Posterior Pituitary (neurohypophysis) - Arises from 3rd ventricle of brain, consists of three parts, median eminence, pituitary stalk, and infundibular process (pars nervosa or neural tube). Median eminence is composed mainly of nerve endings of axons that arise primarily from ventral hypothalamus. Hypothalamic releasing Hormones in Posterior pituitary's median eminence. - Includes 10 hypothalamic releasing hormones and neurotransmitters such as dopamine, norepinephrine, serotonin, acetylcholine, and histamine. Pituitary stalk - contains axons of neurons that originate in the supraoptic and paraventricular nuclei of the hypothalamus. Hormones of posterior pituitary - ADH, and Oxytocin (Peptide Hormones) ADH (antidiuretic Hormone) - Major homeostatic function of posterior pituitary is control of plasma osmolality, as regulated by ADH Hypothalamic hormones and target tissues (Hypophysiotropic hormones) - HORMONES: Thyrotropin Releasing Hormone (TRH), Gonadotropoin-releasing hormone (GnRH), Somatostatin, Growth hormonereleasing hormone (GHRH), corticotropin-releasing hormone (CRH),