Thyroid Gland: Thyroid Hormones Flashcards
TSH stimulates the thyroid gland to produce the thyroid hormones….
T3 and T4
triidothyrine) and (thyroxine
What do the thyroid hormones do the BMR? How?
__________the BMR by acting on the________ by utilizing _______ to produce ATP
Increase
mitochondria
oxygen
Thyroid hormones’ help regulate body ______
through stimulation of Na+/K+ pumps. this uses ______ and body temp rises.
temp
ATP
Thyroid hormones also assist in the synthesis of ______ like in GH.
protein
Thyroid hormones stimulate the use of _____ acids for ATP
while also simulating the use of _____ for ATP
fatty
glucose
Thyroid hormones enhance the action of ______________ and __________ by upregulating their receptors
epinephrine,
norepinephrine
What’s the difference between GH and thyroid hormones in energy production?
GH spares glucose
T3/t4 do not.
Does the thyroid gland store and release its own hormones?
yes
Is thyroid hormone water or lipid-soluble?
lipid
Because thyroid hormone is lipid-soluble does it act indirectly or directly in the target cells?
directly
Thyroid Hormone increases ______rate and body _____ production
metabolic,
heat
Thyroid Hormone increases the number of _________ receptors in blood vessels creating an excitatory reponce of blood vessels
androgenic
Thyroid Hormone regulates tissue _________ and ______
growth and development
Normal Physiological effect of T3/T4: Thyroid hormones effect the BMR and temp regulation by promoting normal _____use, and BMR. it also enhances the effects of the _________ _______ system
normal O2
sympathetic Nervous
Normal Physiological effect of T3/T4: promotes ______ catabolism; mobilizes _____ witch is essential for _____ synthesis. enhances livers synthesis of ______
glucose,
fats,
protein
cholesterol
Effect of Hyposecretion (BMR and Temp reg)
Low BMR decreased body temp, cold intolerance, decreased appetite; weight gain
Effects of Hypersecretion (BMR and Temp reg)
____ BMR, ______ body temp, heat ________, incresed_________
weight ______
high , increased
intolerance,
appetite,
loss
Effect of Hyposecretion (Carb lipid/protein metabolism)
______glucose metabolism; _______ cortisol and triglyceride levels in the blood plus ________ protein______
Decreased; elevated decreased synthesis. (edema)
Effects of Hypersecretion: Enhanced catabolism of __________, _______ and ______; weight _____ and _____ of muscle mass.
glucose, proteins, fats;
loss
loss
Thyroid Hormones: list all 3
T3, T4 and Calcitonin
Calcitonin is produced by _____________ cells of the _____ gland
parafollicular
thyroid
is Calcitonin the primary regulator in blood Calcium levels?
no
what does Calcitonin target?
the skeleton
Calcitonin is bone ______
sparing
What is the 1st (of 3) point Calcitonin bone sparing? 1. it inhibits ______ activity and ______ reabsorption
osteoclast
bone
What is the 2nd (of 3) point of Calcitonin bone sparing? 2. It stimulates_______ ______ in the bone matrix.
calcium uptake
What is the 3rd (of 3) point of Calcitonin bone sparing?
it decreases blood ______ levels.
calcium
Calcitonin is only released when we abnormally ________ levels of blood calcium (___%) ______ nomral
high
20
above