Endocrine Systems

Endocrine Systems - Endocrine glands and hormones 13:05:00...

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Endocrine glands and hormones 19/03/2008 13:05:00 Hypothalamus-Pituitary Complex Pituitary gland hangs down from the hypothalamus Anterior Pituitary     Larger lobe of pituitary Circulatory connection to hypothalamus o Hypothalamus secretes neurohormones into bloodstream o Releasing hormones o Inhibiting hormones Growth Hormone (GH)      – Anterior Pituitary Stimulates growth through increases in cell size and rates of division Bone, muscle, cartilage  Pituitary dwarfism – Too little growth hormone Giantism – Too much growth hormone Prolactin (PRL      – Anterior Pituitary) Stimulates mammary gland development and production of milk Stimulates sperm production
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Tropic Hormones     Hormones that influence another endocrine gland Thyroid-Stimulating hormone (TSH)     o Stimulates synthesis and release of thyroid hormones Adrenocorticotropic hormone (ACTH)     o Stimulates the synthesis and secretion of glucocorticoid hormones  from adrenal cortex Follicle-stimulating hormone (FSH)      -> Gonadotropins o Promotes development of eggs and sperm o Stimulates secretion of estrogen Luteinizing hormone (LH)      -> Gonadotropins o Stimulates ovulation o Stimulates secretion of estrogen and progesterone o Stimulates production of testosterone Question: Releasing and inhibiting hormones from the hypothalamus are  examples of tropic hormones? Answer: True
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This note was uploaded on 04/22/2009 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas.

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Endocrine Systems - Endocrine glands and hormones 13:05:00...

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