Term
| What is the origin of the anterior pituitary? |
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Definition
| From Rathke's Pouch....the posterior portion of the stomadeum that starts growing toward the brain |
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Term
| Where does the posterior pituitary come from? |
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Definition
| the diencephalon grows down |
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Term
| Which hormones are produced from the anterior lobe? |
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Definition
| Growth hormone, prolactin and trophic hormones (TSH, ACTH, ICTH, FSH and LH) |
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Term
| What does the Pars Intermedia produce? |
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Definition
| MSH (melanocyte stimulating hormones) |
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Term
| What does the posterior lobe produce? |
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Definition
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Term
| What is Empty Sella Syndrome? |
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Definition
| any condition that destroys the pituitary and cause the sella to appear empty at autopsy....symptoms depend on how much parenchyma is lost |
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Term
| T/F Most pituitary neoplasms are benign? |
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Definition
| T....most are benign, but most are sitting in the sella turcica right behind the optic chiasm where the tumor grows largecausing headaches, nausea, vomiting, death, dizziness and papillodoma |
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Term
| What is the most common pituitary tumor of children? |
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Definition
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Term
| What tumor does this describe: usually originates from a duct, gets large tissues that are full of cysts, acts like a brain tumor and microscopically looks like a developing tooth |
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Definition
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Term
| What pituitary tumor does this describe: most common pituitary tumor in the adult, get large and destroy the remainder of the pituitary gland and the brain? |
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Definition
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Term
| What pituitary tumor does this describe: produces tropic hormones, does not get that big? |
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Definition
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Term
| What tumor does this describe: produces growth hormone and prolactin? |
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Definition
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Term
| Describe dwarfism and its cause(s) are/is? |
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Definition
| Syndrome that causes hypopituitarism when there is a lack of growth hormone in children...most often caused by craniopharyngioma |
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Term
| Describe Simmonds disease, its cause and effects? |
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Definition
| Failure of trophic hormones as an adult that causes hypopituitarism. Chromophobe adenoma usually causes this but also seen with Sheehans post partum necrosis. Adrenal glands don't work, melanocytes pale, breasts disappear, lose body hair and become pale |
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Term
| What is posterior pituitary syndrome? |
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Definition
| something that destroys the posterior pituitary. Usually caused by craniopharyngioma, langerhans cell dx or it is idiopathic. Results in no ADH being produced and causes diabetes insipidus |
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Term
| What are the 2 causes of hyperpituitarism? |
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Definition
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Term
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Definition
| pituitary produced too much growth hormone in a child before epiphysis close.\ and from an acidophil adenoma (produces GH) which destroys the rest of the pituitary. (Heart can't keep up with that big of a person therefore die of high output failure) |
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Term
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Definition
| excessive growth hormone after closed epiphysis in adults...the person grows in girth...only acral (hands and feet) parts become lengthened. Get prognathic jaw, macroglossia and course facial features. |
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