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30 Cards in this Set
- Front
- Back
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What hormones does the Hypothalamus secrete?
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Corticotropin releasing hormone (CRH)
Thyrotropin releasing hormone (TRH) Growth hormone releasing hormone (GHRH) Gonadotropin releasing hormone (GnRH) Somatostatin |
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What is the major action of CRH, TRH, GHRH, GnRH ?
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Controlling the release of pituitary hormones
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What is the major action of somatostatin?
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Inhibits growth hormone and thyroid stimulating hormone
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What is the major action of Growth Hormone (GH)?
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Stimulates growth of bone and muscle, promotes protein synthesis and fat metabolism, decreases carbohydrate metabolism.
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What is the major action of Adrenocorticotropic hormone (ACTH)?
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Stimulates synthesis and secretion of adrenal cortical hormones
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What is the major action of Thyroid stimulating hormone TSH?
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Stimulates synthesis and secretion of thyroid hormone
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What is the major action of Follicle stimulating hormone FSH?
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Female: stimulates growth of ovarian follicle, and ovulation.
Male: stimulates sperm production |
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What is the major action of Luteinizing hormone LH?
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Female: stimulates development of corpus luteum, release of oocyte, production of estrogen and progesterone.
Male: stimulates secretion of testosterone, development of interstitial tissue of testes. |
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What si the major action of Prolactin?
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Prepares female breast for breast feeding
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What is the source of GH, ACTH, TSH, FSH, LH, and prolactin?
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Anterior pituitary
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What is the major action of ADH, antidiuretic hormone?
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Increases water reabsorption by kidneys
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What is the major action of Oxytocin?
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Stimulates contraction of pregnant uterus, milk ejection from breasts after childbirth.
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What is the source of ADH and Oxytocin?
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Posterior pituitary
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What is the major action of aldosterone?
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Increases sodium absorption, potassium loss by kidney
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What is the major function of cortisol?
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Affects metabolism of all nutrients; regulates blood glucose levels, affects growth, has anti-inflammaory action, and decreases effects of stress
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What is the major function of dehydroepiandrosterone (DHEA) and androstenedione?
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Have minimal intrinsic and adrogenic activity, they are converted to testosterone and dihydrotestosterone in the periphery
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What is the source of aldosterone, cortisol, DHEA, and androstenedione?
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Adrenal Cortex
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What is the major action of Epinephrine and Norepinephrine?
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Serve as neurotransmitters for the sympathetic nervous system.
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What is the source of epinephrine and norepinephrine?
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Adrenal medulla
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What is the major action of thyroid hormones triiodothyronine T3 and thyroxine T4?
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Increases the metabolic rate; increase protein and bone turnover; increase responsiveness to catecholamines; necessary for fetal and infant growth and development
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What is the source of thyroid hormones?
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Thyroid follicular cells
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What is the major action of calcitonin?
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Lowers blood calcium and phosphate levels
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What is the source of calcitonin
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Thyroid C cells
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What is the major action of PTH, parathyroid hormone?
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Regulates serum calcium
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What is the function of insulin?
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Lowers blood glucose by facilitating glucose transport across cell membranes of muscle, liver, and adipose tissue
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What is the major action of Glucagon?
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Increases blood glucose concentration by stimulating glycogenolysis and glyconeogensis
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What is the major action of somatostatin?
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Delays intestinal absorption of glucose
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What is the source of insuliln, glucagen?
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Pancreatic islet cells
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What is the function o f1,25- Dihydroxyvitamin D?
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Stimulates calcium absorption from the intestine
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What is the function of Renin
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Activates renin-angiotensin- aldosterone system
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