Hypothalamus & Pituitary Glands

Hypothalamus & Pituitary Glands - Tropic Hormones =...

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AP Biology 1) Hypothalamus a) b) Secretes hormones of the posterior pituitary & releasing factors that regulate the anterior pituitary - Pituitary Gland = An endocrine gland located at the base of the hypothalamus 2) Posterior Pituitary Gland (=Neurohypophysis) a) Extension of the hypothalamus composed of nervous tissue b) ADH (=Vasopressin) = helps regulate blood osmolarity on kidney tubules Oxytocin = stimulates contraction of uterus and mammary gland cells 3) Anterior Pituitary Gland (=Adenohypophysis) a) Portion of pituitary that develops from nonneural tissues b) 4) Tropic Hormones & Nontropic Hormones a) They are all made from anterior pituitary gland b)
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Unformatted text preview: Tropic Hormones = Any hormone that has another endocrine gland as a target (Stimulates production of other hormones) Follicle-Stimulating Hormone (FSH) = stimulates production of ova & sperm Luteinizing Hormone (LH) = stimulates ovaries and testes Adrenocorticotropic Hormone (ACTH) = stimulates adrenal cortex to secrete glucocorticoids Thyroid-stimulating Hormone (TSH) = stimulates thyroid hormones c) Nontropic Hormones = Any hormone that has direct effect Prolactin = stimulates milk production and secretion = various function among different species; evidence of evolution Melanocyte-stimulating hormone = hunger control (MSH) d) Growth Hormone (GH) Has both aspects of tropic & nontropic hormones Stimulates the growth of bones and cartilages Involved in metabolic rates Excessive secretion = Gigantism Short secretion = Dwarfism...
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