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How many hormones circulate in your blood?
50
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What are the functions of the endocrine system?
Hormones
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Where do hormones come from?
From endocrine glands.
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What system does the endocrine system react with?
The nervous system.
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What are steroid hormones?
Lipid soluable, chemically derived from cholesterol.
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What are nonsteriod hormones?
Water soluable, faster action than steriod hormones.
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What are the hormones made in the hypothalamus stored?
In the posterior pituitary gland.
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What types of hormones are produced by the hypothalamus?
Non steriodal hormones: Antidiuretic hormone (ADH), Oxytocin.
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What is the function of the ADH?
Antidiuretic hormone conseves water in kidneys, regulates water balance in the body.
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What is the function of Oxytocin?
Causes uterine contractions during labor and milk ejection through neuroendocrine reflex.
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What are the hormones of the anterior pituitary?
Nonsteroidal hormones: ACTH, TSH, FSH, LH, Prolactin, Growth Hormone.
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What is the function of ACTH?
Stimualates adrenal cortex.
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What is the function of TSH?
Acts on thyroid gland.
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What is the function of FSH, LH, and Prolactin?
Related to control of reproductive cycles and lactation.
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What is the function of growth hormone?
Widespread effect on body.
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What are the hormones produced by the pancreas?
Glucagon, insulin, somatostatin.
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What is the function of glucagon?
Made by alpha cells, raises blood sugar.
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What is the function of insulin?
Made by beta cells, lowers blood sugar.
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What is the function of somatostatin?
Made by delta cells, inhibits secretion of glucagon and insulin, regulates other hormones.
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What are the hormones of the adrenal cortex?
Steriodal: Glucocorticoids, mineralocorticoids.
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What are the hormoes of the adrenal medulla?
Nonsteriodal: Epinephrine, norepinephrine.
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What are the hormones of the thyroid gland?
T4, T3, and calcitonin
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