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