endocrine Flashcards
endocrine/nervous system specifications
nervous system acts quickly but effects disappate quickly. it also has more specific targets
both act to maintain homeostasis
endocrine acts
pineal gland
post wall of 3rd ventricle/diencephalon
regulates circadian rhythm
pituitary
housed in sella turcica (sphenoid)
connected to hypothalamus through infundibulum, which is part of the the 3rd ventricle
pituitary lobes development
anterior arises form epithelium of oral cavity in development
posterior arises from nervous tissue
anterior lobe
RHs and IH from hypothalamus stimulate production of stimulating hormones
secreted into portal system
posterior lobe
neurons from PVN and SON (with OT and ADH) send axons to post. pituitary and hormones are stored there
release to capillary network
which arteries supply the thyroid
inferior thyroid from subclavian and superior thyroid from external carotid
sign of thyroid cancer
changes in voice: branches of CNX pass behind thyroid