BIOLOGY 225 Lecture Notes - Lecture 4: Pituitary Gland, Anterior Pituitary, Luteinizing Hormone

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15 Jan 2017
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Neuroendocrine system: hypothalamus, pituitary, and pineal gland. June 6, 2016: some neurons modify and assume secretory function, the cells start out as neuro cells, develop and differentiate into endocrine cells (release hormones) Provides the port where hypothalamo neurons are released. Carries blood, which allows for transport of hormones, to pituitary gland: pituitary vein joins w/ other blood vessels and goes to heart, hormone only acts on anterior pituitary. Hypothalamic releasing hormones (rh) stimulate anterior pituitary to secrete hormones: releasing hormones (stimulating/rh, inhibiting hormones (ih, stress stimulates production of crh pomc msh & acth acth will produce cortico steroids. Growth hormone (gh: effect the fat cells, igfs (insulin growth factor) they promote growth but have structure of insulin. Come out of liver and go to heart and produce effect on somatic and bone tissue. Bones grow longer and we get taller: hypothalamus. Ghih inhibits: over secretion of gh. Gigantism increased gh in early life. Acromegaly increased gh in later life.

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