Advanced pathophysiology NR 507 final exam

Advanced pathophysiology NR 507 final exam Fat Soluble Hormones - ANS Steroids Water Soluble Hormones - ANS Need 2nd Messenger to transport across phospholipid membranes Pituitary Hormones - ANS TSH, GH, ACTH, FSH, LH, Oxytocin, ADH, Melanocyte Stimulating Hormone Anterior Pituitary - ANS 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) - ANS 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. - ANS Includes 10 hypothalamic releasing hormones and neurotransmitters such as dopamine, norepinephrine, serotonin, acetylcholine, and histamine. Pituitary stalk - ANS contains axons of neurons that originate in the supraoptic and paraventricular nuclei of the hypothalamus. Hormones of posterior pituitary - ANS ADH, and Oxytocin (Peptide Hormones) ADH (antidiuretic Hormone) - ANS Major homeostatic function of posterior pituitary is control of plasma osmolality, as regulated by ADH Hypothalamic hormones and target tissues (Hypophysiotropic hormones) - ANS HORMONES: Thyrotropin Releasing Hormone (TRH), Gonadotropoin-releasing hormone (GnRH), Somatostatin, Growth hormone-releasing hormone (GHRH), corticotropin-releasing hormone (CRH), Substance P, Dopamine, Prolactin-releasing factor.