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The hypothalamic-pituitary-target organ axis is very important in the regulation of endocrine
hormone levels. Understanding this principle is essential to diagnosing many endocrine diseases.
A hypersecreting adrenocortical tumor would be expected to produce the following plasma
levels:
a. high cortisol, high aldosterone, high CRH and high ACTH
b. high cortisol, low aldosterone, high CRH and high ACTH
c. high cortisol, high aldosterone, low CRH and high ACTH
d. high cortisol, high aldosterone, low CRH and low ACTH
e. low cortisol, low aldosterone. low CRH and low ACTH - (answer)d. high cortisol, high
aldosterone ow CRH and low ACTH
If a synthetic hormone DONOTHING is given there is no obvious change in any physiology
function. Administration of hormone GETBIG causes major muscle growth. When both
compounds are given together, the muscle growth is markedly increased even more than with
GETBIG alone. This is an example of hormones exerting:
a. a synergistic effect
b. an additive effect
c. a permissive effect
d. an antagonistic effect - (answer)c. a permissive effect
你是想要一篇“眼睛容易
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For a hormone to exert an effect on any tissue the cells of that tissue must contain:
a. a specific receptor protein that recognizes and binds to the hormone
b. cells that secrete the hormone
c. the cAMP messenger system
d. ionic channels associated with the receptor protein - (answer)a. a specific receptor protein that
recognizes and binds to the hormone
which of the following chemicals is *not* found as a hormone?
, a. amines
b. polypeptides
c. proteins
d. steroids
e. glycoproteins
f. triglycerides - (answer)f. triglycerides
if the stalk of the pituitary is cut or destroyed in any way there can be lots of endocrine related
problems. which of these hormones would be most likely to ave normal plasma levels?
a. cortisol
b. thyroxine
c. TSH
d. TRH
e. ADH - (answer)e. ADH
A tumor develops in the hypothalamus of a 3 year old child and produces excess GHRH (growth
hormone releasing hormone). You would expect symptoms of:
a. acromegaly
b. short stature
c. gigantism
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d. excessive urination
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e. rapid maturation of external gentialia - (answer)c. gigantism
oxytocin is:
a. synthesized in the hypothalamus and released from the posterior pituitary
b. released from the anterior pituitary
c. a steroid hormone produced by the mammary gland alveoli
d. a hypothalamic releasing hormone - (answer)a. synthesized in the hypothalamus and released
from the posterior pituitary