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What does the Anterior Pituitary (Hypophysis) Secrete?
Growth Hormone (GH), Thyroid Stimulating Hormone (TSH), Adrenocorticotropic Hormone/Corticotropin (ACTH), Follicle-Stimulating Hormone/Gonadotropin (FSH), Lutenizing Hormone (LH)/Gonadotropin, Prolactin (PRL).
What is Growth Hormone (GH) Action?
Promote protein synthesis; encourages fats for fuel (lipolysis), inhibits glucose uptake.
What is the action of LH and Gonadotropin?
In females works w FSH for maturation of ovarian follicle, alone triggers ovulation, promtes release estrogen/progesterone. In males stimulates testes to produce testosterone.
What does the Thyroid Secrete?
(TH) Thyroid Hormone - splits into T4 Thyroxine and T3 Triiodthyronine.
What is the action of Thyroid Hormone?
Glucose oxidation, increase metabolic rate, heat production, partially involved in maintaining BP, regulating tissue growth, developing sketal/nervous systems, maturation/reproductive capabilities (libido).
What is the action of Calcitonin?
Inhibits osteoclast activity, inhibits release of CA from bone matrix, stimulates Ca uptake into bone matrix.
What is the action of PTH?
Stimulates osteoclasts, enhances reabsorption of Ca and secretion of P by kidneys, increases absorption of Ca by intestinal mucosa.
What is the action of Mineralcorticoids?
Maintains Na balance (by reducing excretion of Na from body), stimulates reabsorption of Na by the kidneys.
What is the action of Glucocorticoids?
Helps body resist stress: keeping blood sugar levels constant, maintaining blood volume/preventing water shift into tissue; Cortisol provokes gluconeogenesis (formation of glucose from non carbs), rises in blood glucose/fatty acids/amino acids.
What is the action of Gonadocotricoids?
Contribute to onset of puberty/apperance of secondary sex characteristics; sex drive in males/females.
What is the action of Epinephrine?
Blood glucose levels rise, heart beats faster, blood diverted to brain, heart and skeletal muscles.
What is the action of Melatonin?
Affects day/niht cycles, physiological processes that show rhythmic variations (body temp/sleep/appetite).
What is the affect of Glucagon?
Glycogenolysis (breakdown glycogen into glucose); Glucogenesis (synth of glucose from lactic acid/non carbs); release of glucose to blood from lover cells.
What is the action of Insulin?
Lowers blood glucose levels, enhances transport of glucose into blody cells, counters metabolic activity that would increase blood glucose levels.
What is the action of Estrogen and Progesterone?
Mature reproductive organs, appearance of secondary sex characteristics, breast development, cyclic changes in uterine mucosa.
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