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Learn about the pituitary gland and its important role in the endocrine system. Understand the two lobes of the pituitary gland, their control mechanisms, and the hormones they produce. Explore disorders such as gigantism, acromegaly, pituitary dwarfism, and diabetes insipidus. Discover the functions of oxytocin and antidiuretic hormone. Find reliable resources for further information.
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Gigantism12 year old boy 6’ 5”Too much HGH in youthusually caused by tumour
Acromegalyenlarged hands, feet & faceToo much HGH as adultUsually caused by tumourtreat tumor or hGH blocking drugs
Pituitary dwarfismtoo little HGH as childtumor or missing pituitarynote normal proportions
Genetic dwarfismnote out of proportionbig head regular body, short legs & arms
Prolactin stimulates lactogenesisNormally dopamine inhibits prolactinsuckling stimultes nerves on nipplehypothalmus stimultes the production of prolactin Neuroendocrine reflex
Anti-diuretic hormoneproduced in Posterior Pituitarycauses body to retain watertoo much salt detected by HYPOADH producedtoo little salt detected less ADH producedDiabetes insipidus=insufficient Anti-diuretic produced
Web sites • http://www.umm.edu/endocrin/pitgland.htm • http://arbl.cvmbs.colostate.edu/hbooks/pathphys/endocrine/hypopit/ • http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/Pituitary.html • http://www.pituitary.org.uk/disorders/