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final review part 3
endocrine system
13
Anatomy
Undergraduate 1
07/25/2007

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Term
thyroid gland consists of what three hormones
Definition
t3 triodothyronine and t4 tetraiodothyronine and calcitonin
Term
what do t3 and t4 do?
Definition
convert iodide ions to molecular iodine
Term
what glands convert iodide ioins to molecular iodine
Definition
triodothyronine and tetraiodothyronine
Term
are t3 and t4 necessary for growth and devleopment
Definition
necessary for normal growth and development
Term
what is calcitonin
Definition
one of the thyroid hormones-secreted when calcium levels are high in the blood
Term
where is calcitonin secreted from
Definition
thyroid gland
Term
why is calcitonin secreted and what does it do
Definition
when calcium levels are high in the blood; it stimulates osteoblasts(make) to take ca out of hte blood and lay it down in bone
Term
what is the saying about calcitonin and blood
Definition
calcitonin tones it down
Term
parathyroid glands
Definition
group of cells embedded in thyroid gland
Term
what is the hormone released by the parathyroid gland
Definition
parathyroid hormone or parathormone
Term
when is the parathyroid hormone secreted?
Definition
when calcium in the blood is low
Term
waht does the parathormone do in the parathyroid gland to increase the calcium levels
Definition
it stimulates osteoclasts to reak down bone to add ca to blood
Term
parathyroid hormone and calcitonin act together to maintain ____ of blood___
Definition
homeostasis of blood ca
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