MIDTERM - ELECTROLYTES Flashcards
3 PARTS OF PITUITARY:
ANTERIOR PITUITARY / ADENOHYPOPHYSIS
INTERMEDIATE LOBE / PARS INTERMEDIALIS
POSTERIOR PITUITARY / NEUROHYPOPHYSIS
Arises from the DIENCEPHALON ; responsible for storage and release of OXYTOCIN & VASOPRESSIN (ADH)
POTERIOR PITUITARY
PITUITARY FUNCTION can be detected between ____ and ___ weeks of GESTATION?
7th & 9th
It is the LARGEST portion of the gland, originates from RATHKE’S POUCH. an evagination of buccal ectoderm
ANTERIOR PITUITARY
LACTOTROPHS
PROLACTIN-SECRETING CELLS
PROLACTIN-SECRETING CELLS
LACTOTROPHS
GROWTH HORMONE
SOMATOTROPHS
SOMATOTROPHS
GROWTH HORMONE–SECRETING CELLS
THYROTROPHS
THYROID-STIMULATING HORMONE–SECRETING CELLS
CORTICOTROPHS
ADENOCORTICOTROPIN HORMONE-SECRETING CELLS
GONADOTROPHS
LUETENIZING HORMONE & FOLLICLE-STIMULATING HORMONE–SECRETING CELLS
Where does the PITUITARY reside?
SELLA TURCICA surrounded by DURA MATER
Connects the adenohypophysis to the median EMINENCE and hypothalamus
INFUNDIBULUM
ANTERIOR PITUITARY receives 80%-90% of its blood supply and many hypothalamic factors via ______________________
HYPOTHALAMICHYPOPHYSEAL PORTAL SYSTEM
FEEDBACK of THYROXINE at the level
SHORT FEEDBACK LOOP
FEEDBACK at the level of the hypothalamus
LONG FEEDBACK LOOP
FEEDBACK between the pituitary and hypothalamus
ULTRASOUND FEEDBACK LOOP
Refers to the process of entraining these external cues into the function of internal biologic clocks
ZEITGEBER (TIME GIVER)
