ENDOCRINE SYSTEM--Physiology Extended Student Edition.ppt

Adrenaline acts during the fight or flight response

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adrenaline) Acts during the fight or flight response; increases blood sugar, blood vessel constriction and heart rate Neural regulation Norepinephrine (a.k.a. noradrenaline) Same as Epinephrine Same as epinephrine
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Pancreatic Hormones Hormone Function Regulation Glucagon Acts on the liver to convert glycogen to glucose Stimulated by falling blood sugar and inhibited by increasing amounts of sugar in the blood Insulin Stimulates cells to catalyze oxidation of glucose for ATP production, to convert glucose to glycogen and glucose to fat Stimulated by increasing amounts of blood sugar and inhibited by falling blood sugar levels
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Ovarian Hormones Hormone Function Regulation Estrogen Maturation of female reproductive organs; responsible for secondary sexual characteristics; helps control the menstrual cycle Regulated by gonadotropins in hypothalamus Progesterone Acts with estrogen to enhance breast development and to control the menstrual cycle Same as Estrogen
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Testicular Hormone Hormone Function Regulation Testosterone Maturation of male reproductive organs; responsible for secondary sexual characteristics; promotes normal sperm production; responsible for male sex drive Regulated by gonadotropins in the hypothalamus
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Pineal Gland Hormone Hormone Function Regulation Melatonin Inhibits the release of gonadotropin- releasing hormone (GnRH) to prevent precocious sexual maturation Regulated by diurnal rhythm which is dependent on light
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Thymus Gland Hormones Hormone Function Thymopoietin & Thymosin Function in the immunocompentence of T cells
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