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Hormone Actions Endo

Principal Actions of Hormones

hormonePrincipal Actions
Releasing and inhibiting hormones Regulate secretion of the hormones by the anterior lobe of pituitary
Oxytocin Stimulates contractions,stimulates ejection of milk into ducts
Antidurectic Hormone (ADH) stimulates reabsortion of water, conserves water
Growth hormone (GH) stimulates production of insulin-like growth factors, stimulates growth by promoting protein synthesis
Prolactin stimulates milk production
Thyroid-stimulating hormone stimulates secretion of thyroid hormones; stimulates increase in size of thyroid gland
Adrencorticotropic hormone stimulates secretion of andrenal cortical hormones
Gonadotropic hormones (FSH,LH) stimulates gonad funtion and growth
Thyroxine (T4) and triiodothyronine (T3) stimulates metabolic rate; eseentail to normal growth and development
Calcitonin lowers blood-calcium level by inhibiting CA2+ release frome bone
Parathyroid hormone increases blood-calcium level by stimulating ca2+ release from bone; stimulates calcium reabsorption by kidneys; activates vitamin D; which increases intestinal absorption of calcium
Insulin lowers glucose concentration in the blood by facilitating glucose uptake and utilization by cells; stimulates glycogen production; stimulates fat storage and protien synthesis
Glucagon Raises glucose concentration in the blood; stimulates glycogen breakdown; mobilizes fat
Epinephrine and norepinephrine help body cope with stress; increase heart rate, blood pressure, metabolic rate; reroute blood; mobilize fat; raise blood sugar levels
Mineralocorticoids (aldosterone) Maintain sodium and potassium balance; increase sodium reabsorption; increase potassium excretion
Glucocorticoids (cortisol) Help body cope with long-term stress; raise blood glucose level; mobilize fat
Melatonin Important in biological rhythms; influences reproductive processes in some animals; may help control onset of puberty in humans
Estrogens (estradiol) Develop and maintain sex characteristics in female; stimulate growth of uterine lining
Progesterone stimulates development of uterine lining
Testoserone develops and maintains sex characteristics of males; promotes spermatogenesis; responsible for adolescent growth sprut
Inhibin Inhibits follicle-stimulating hormone (FSH) release in male
Created by: Chris Flaig
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