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Details Title: Physiology 3100 Description: VPHY3100 Fall 2004 Total Flash Cards: 14 Created: 08/29/2004 12:22:09	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term prehormone Definition molecules secreted by endocrine glands that are inactive until changed by their target cells Ex: T4, Vitamin D3 Term synergistic Definition when two or more hormones work together to produce a particular result; may be additive (epi and norepi) or complementary (FSH and testosterone) Term permissive effect Definition when a hormone enhances the responsiveness of a target organ to a second hormone or when it increases the activity of the second hormone Term antagonistic effects Definition actions of one hormone counteract the actions of another Ex: insulin and glucagon Term priming effects/upregulation Definition more receptors are formed in response to particular hormones Ex: GnRH Term desensitization/downregulation Definition high concentrations of a hormone cause a decrease in the number of receptor proteins in their target cells Term Growth hormone (GH or somatotropin) Definition Promotes protein synthesis and growth; lipolysis and increase blood glucose. Inhibited by somatostatinl stimulatied by growth hormone-releasing hormone. Term Adrenocorticotropic hormone (ACTH) Definition Stimulates secretion of glucocorticoids. Stimulated by CRH (corticotropin-releasing hormone); inhibited by glucocorticoids. Term Thryoid-stimulating hormone (TSH) Definition Stimulates secretion of thyroid hormones. Stimulated by TRH (thyrotropin-releasing hormone); inhibited by thyroid hormones. Term Follicle-stimulating hormone (FSH) Definition Promotes gamete production and stimulates estrogen production in females. Stimulated by GnRH (gonadotropin-releasing hormone); inhibited by sex steroids and inhibin. Term Prolactin (PRL) Definition Promotes milk production in lactating females; additional actions in other organs. Inhibited by PIH (prolactin-inhibiting hormone). Term Luteinizing hormone (LH) Definition Stimulates sex hormone secretion; ovulation and corpus luteum formation in females; stimulates testosterone production in males. Stimulated by GnRH; inhibited by sex steroids. Term preprohormone Definition post-translational product of a gene; precursor of prohormone Term prohormone Definition cut and spliced together to make a hormone