Flashcards in pit gland histology Deck (30)
what is superior to the pit gland?
diaphragma sellae and hypothalamus
what is inferior to the pit gland?
what is lateral to the pit gland?
anteroinferior to pit gland?
anterosuperior to pit gland?
cavernous sinuses contain what structures?
CN __, ____,___ and ____tracts are adjacent to pit gland
III, IV, VI optic tract
what division is the anterior and the posterior pituitary derived from?
in the development of the pit gland, what is derived directly from the oral ectoderm prior to developing into the anterior lobe?
the posterior lobe is directly derived from?
what are the signaling molecules for the development of the pit gland?
BMP-4 + FGF-8
Remnants of Rathke’s cleft and the craniopharyngeal duct in children
what does adult Craniopharyngioma develop from?
from mature cells in the anterior hypophysis
Superior hypophysial arteries supplies?
inferior hypophysial arteries supplies
a scant reticulin network in pars distalis characterizes what?
what to use if you want to ID hormone that an adenoma is producing (ie. FSH)
acidophils that secrete GH?
acidophils that secrete prolactin
what are the only acidophils in the pars distalis?
somatotropes + mammotropes
rarely, acidophilic stem cells in a normal pit can synthesize & secrete ____ and _____
GH and prolactin
basophils that secrete ACTH and β-lipotrophic hormone
basophils that secrete LH and FSH
ACTH is found where in pit?
mucoid wedge; can invade posterior pit
crooke's hyaline change is seen with what?
response of corticotropes to excess glucocorticoids
collection of axons whose cell bodies reside in the supraoptic & paraventricular nucleir of the hypothalamus
what are the support cells of the neurohypophysis
paraventricular nucleus makes?
supraventricular nucleus makes?