chapter 18.3 Flashcards
where is the thyroid located
just below the larynx with left and right lateral lobes
what does the thyroid secrete
T3 and T4
triiodothyronine and thyroxine
parafollicular cells that secrete calcitonin
what are thyroid hormones synthesized from
iodine & tyrosine within thyroglobulin
what do thyroid hormones regulate
oxygen use
basal metabolic rate
cellular metabolism
growth & development
what controls the secretion of thyroid hormones
iodine levels in the thyroid and negative feedback systems in the hypothalamus
calcitonin
lowers the blood level of calcium
what do principal cells produce
parathyroid hormone and oxyphil cells
parathyroid hormone regulates
the homeostasis of calcium and phosphate
(Increases calcium level, decreases phosphate level in blood)
the pancreas can be classified as both a
endocrine and exocrine gland
Acini
enzyme producing exocrine cells
alpha cells secrete
beta cells secrete
delta cells secrete
F cells secrete
glucagon, insulin, GHIH (somatostatin), pancreatic polypeptide
glucagon increases
insulin decreases
blood sugar levels
GHIH (growth hormone inhibiting hormone) is a paracrine that inhibits
the secretion of insulin and glucagon
pancreatic polypeptide regulates the
release of pancreatic digestive enzymes
ovaries are located in the pelvic cavity and produce
estrogen, progesterone, inhibin and relaxin
