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The flashcards below were created by user
ffloyd
on FreezingBlue Flashcards.
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Destruction of the _______ will leave activity rhythms intact but eliminate melatonin rhythms
suprachiasmatic nucleus
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The _____ evolved from the parietal eye
pineal gland
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The duration of ____________release corresponds to night length
- melatonin
- (light inhibits melatonin release)
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The retinal signal is transmitted to the pineal gland via ____________
the spinal cord
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Administering testosterone to a female fetus during the critical phase of sexual differentiation would cause the _________ ducts to degenerate
Mullerian
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Estradiol concentrations _____ prior to the LH surge
increase
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If a cow has a growth on the left side of her endometrium, what hormone is not being made causing a persistent CL?
Prosaglandin F2alpha
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What does atrial natriuetic peptide do?
inhibits sodium reabsorption
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If a person has lost a significant amount of blood, vasopressin will _______ (incr/decr)
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__________ are synthesized in the zona glomerulosa
glucocorticoids
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T/F - Testosterone and cortisol are synthesized in both sexes
True
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_______ is synthesized in the zona fascicula
Cortisol
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_______ is the precursor of all steroid synthesis
cholesterol
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Deficiency of CYP21 leads to ____________
congenital adrenal hyperplasia
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The uptake of iodide from the circulation involves ________
the NA-I symporter
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Which is released in greater amounts, tri-iodothyronine or thyroxine?
thyroxine
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Follicular cells pinocytose _____ from the follicular lumen
colloid
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The rate of thyroid hormone synthesis is dependent on the rate of _____________ production within the follicular cells
hydrogen peroxide
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Parafollicular thyroid cells make the hormone _______
calcitonin
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Cortisol is made in the ___________
zona fascicula
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Glucocorticoids are made in the _____________
zona glomerulosa
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What 3 plasma proteins transport thyroid hormone?
- Globulin ~ 70%
- Transthyretin ~ 25%
- Albumin ~ 5%
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_________________ cells make calcitonin
Parafollicular thyroid cells
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In Graves' disease, plasma TSH concentrations are usually _________
elevated
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In Graves' disease, plasma T4 concentrations are __________
elevated
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In Graves' disease, antibodies capable of stimulating ________ are present
thyroid tissue
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In Graves' disease, thyroid _________ my be seen
hyperplasia
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A person with Graves' disease is usually _______ of heat
intolerant
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African-Americans have seen a rise in Ricketts manly due to __________ and _________
lactose intolerance and the inability to make sufficient Vitamin D
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T/F - this test will be easy
true? hopefully
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