Feedback Loops Flashcards
endocrine organs
hypothalamus thyroid gland pituitary parathyroid glands adrenal glands pancreas ovaries testes
hypothalamus secretions
TRH CRH GnRH somatostatin dopamine
anterior pituitary secretions
TSH FSH LH ACTH MSH GH prolactin
posterior pituitary secretions
oxytocin
ADH
thyroid secretions
T3, T4
Calcitonin
parthyroid hormines
PTH
pancreas secretions
insulin
glucagon
adrenal medulla secretions
NE
E
adrenal cortex secretions
cortisol
aldosterone
adrenal androgens
kidney secretions
renin
1,25 - dihydroxycholecalciferol
corpus luteum
estradiol
progesterone
placental secretions
HCG
estriol
progesterone
HPL
lipid vs. water soluble hormones
lipid - receptors inside cell, synthesis of proteins, synthesized as needed (exception thyroid), carried in plasma on proteins, long half life
water - receptors outside cell, production of 2nd messengers, stored in vesicles, dissolve in plasma, short half life
plasma analysis
reflective only of time of sampling
-variation can be caused by many factors
urine analysis
restricted to measurement of catecholamines and steroid hormones
-can reflect an integrated (average) sample
