Phys: Endocrinology Flashcards
pituitary gland is divided into 2 parts
adenohypophysis-Ant. pituitary
neurohypophysis- post. pituitary
Adenohypophysis portion of pituitary, embryology, connection to hypothalamus, location, hormones
anterior Rathkes Pouch Hypophysial portal system Sella turcica GH; TSH; prolactin; FSH; LH; ACTH;MSH
Neurohypophysis portion of pituitary, embryology, connection to hypothalamus, location, hormones
posterior Neural ectoderm Infundibulum stalk Sella turcica ADH; Oxytocin
Oxytocin does what?
milk let down
contracts uterus
is stimulated my suckling
Pancreas fxn, hormones, target, effect?
regulates blood sugar Insulin; Glucagon liver (many others) dec. blood glucose (insulin) Inc. blood glucose (glucagon)
Para-thyroid, vitamin D, Thyorid- fxn, hormones, target, effect
all 3 regulate blood calcium
parathormone- pulls Ca++ out (parathyroid)- increases blood ca++/ decrease phosphorus
calcitonin- secreted from parafollicular- dec blood ca++
T3 & T4 from follicular cells- increases phosphorus
target-Bone
Zona glomerulosa fxn, hormones, target, effect?
regaulates salt balance
mineralcorticoids- aldosterone
kidney
reabsorb Na+ & secrete K+
Zona fasciculata fxn, hormones, target, effect?
regulates blood sugar
glucocrticoids - cortisol
many targets
inc blood glucose
Zona reticularis fxn, hormones, target, effect?
secondary sexual charc.
androgens- testosterone
hair follicles
hair growth
adrenal medulla fxn, hormones, target, effect?
fight or flight
Medulla; EPI; NE
many targets
inc. HR, inc BP; Inc. blood glucose