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17 Cards in this Set
- Front
- Back
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GH and prolactin are acidophilic or basohilic cells?
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acidophilic
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ACTH, POMC, MSH, TSH, FSH, LH are acidophilic or basohilic cells?
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basohilic
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posterior pituitary produces what?
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Anti-diuretic hormone (ADH)
Oxytocin (posterior stops your pee! posterior, post sex, cuddle...if your a biddie) |
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NEUROHYPOPHYSIS=
ADENOHYPOPHYSIS= |
NEUROHYPOPHYSIS= Posterior
ADENOHYPOPHYSIS= Anterior pituitary |
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if you see an excess of production of the anterior pituitary hormones you might start thinking there is what problem in the brain?
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adenoma in the anterior lobe of the pituitary
note: if the levels aren't SKY HIGH then it probably is NOT adenoma |
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30% of all adenomas are what? (most common functional pituitary tumor)
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Prolactinoma
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pt presents with amenorrhea, infertility, loss of libido & galactorrhea...what problem do they likely have?
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Prolactinoma
30% of all adenomas are prolactinomas (most common functional pituitary tumor) |
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what is the difference btw gigantism and acromegaly?
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increase in GH before closure of epiphyses-->gigantism (starts as kid)
increase in GH after closure of epiphyses --> acromegaly (happens to adults) |
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Cushing's syndrome due to an anterior pituitary adenoma is due to an increased production in?
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ACTH
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middle aged men & women
produce neurologic symptoms – impaired vision, cephalgia, diplopia |
gonadotrophadenomas – LH & FSH producing
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this is found in the anterior pituitary and can be seen histologically but Rarely have a significant hormonal output that leads to clinical dz...
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MICROADENOMA
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this lesion is described as having a "machine oil" appearance, and is derived from remnants of Rathke's pouch.
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CRANIOPHARYNGIOMA
(benign tumor) from Wiki: Craniopharyngioma is a rare, usually suprasellar neoplasm, which may be cystic, that develops from rests of epithelium derived from Rathke's pouch.Rathke's pouch is an embryonic precursor of the anterior pituitary. |
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Ischemic necrosis and Sheehan syndrome...what does this lead to?
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anterior pituitary can tolerate ischemia reasonably well (>75% damage --> hypopituitarism)
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post-partum necrosis of anterior pituitary – most common form of clinically significant ischemic necrosis of the anterior pituitary describes....?
this can be a result of what? *** |
Sheehan syndrome
result of obstetric hemorrhage or shock may be 2° to other causes - - DIC & rarely sickle cell disease, increased intracranial pressure, traumatic injury, shock |
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stimulates contraction of smooth muscle cells in gravid uterus & those that surround the lactiferous ducts in mammary glands
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oxytocin
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diabetes insipidus (deficiency)
inappropriately high levels of ADH can be a result of what? |
posterior pituitary lesions! (these both involve ADH)
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Hypopituitarism secondary to lack of releasing hormones
Central diabetes insipidus due to lack of ADH synthesis Precocious puberty due to mid line hamartoma in boys all may be due to? |
Hypothalamic disorders
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