HESI endocrine Flashcards
hormones can be chemically classified into 4 groups
APES
Amino acid derived
Polypeptide/Protein
Eicosanoids
Steroids
steroid hormones are lipids that are synthesized from ___
cholesterol
Eicosanoids are lipids that are synthesized from the ___ ___ chains of ___
fatty acid chains of phospholipids
Hormones activate target cells by one of 2 methods, depending on the chemical nature of the hormone: ___ and ___
lipid soluble
water soluble
___ ___ hormones diffuse through the membrane of the cell. It then binds to a receptor protein that in turn activates a ___ segment that turns on specific genes
lipid soluble
DNA
Instead of directly stimulating, water soluble hormones use a ___ ___
secondary messenger
Water soluble hormones can use these 2 secondary messengers
cyclic AMP
Inositol triphosphate
cyclic AMP is produced when the receptor protein activates another membrane-bound protein called a ___ ___
G protein
The G protein activates adenylate cyclase, the enzyme that catalyzes the production of ___ ___
cyclic AMP
___ ___ is produced from membrane phospholipids. ___ ___ in turn triggers the release of ___ from the ER, which activates the enzymes that causes the cellular changes
Inositol triphosphate
Inositol triphosphate
Ca
The ___ makes up the lower region of the diencephelon
hypothalamus
the __ __ is attached to the bottom of the hypothalamus
pituitary gland
When changes are detected in the body, the ___ directs the ___ to release hormones
hypothalamus
pituitary gland
___ are hormones that stimulate other hormones
trophins
communication between the hypothalamus and the anterior pituitary gland occurs through
chemicals
communication between the hypothalamus and the posterior pituitary occurs through ___ ___
neurosecretory cells
somatostatin
inhibits release of GH
GH means
growth hormone
Thyrotropin
stimulates the release of TSH and GH
Gonadotropin
release of LH and FSH
dopamine
inhibits release of prolactin
FSH regulates ___ and ___
oogenesis and spermatogenesis
LH causes ___ and release of ___
ovulation
testosterone
Prolactin simulates production of ___
milk
ADH prevents
dehydration
Thyroxine
increases metabolism
triiodothyronine
increases metabolism
calcitonin
decreases blood Ca
parathyroid hormone
increases blood Ca
Epinephrine (adrenaline)
increases blood glucose levels