Quiz 7
Liberty University
BIOM 525
Human Physiology Lecture
Question 1
1 out of 1 points
Which hypothalamic hormone causes release of ACTH?
Selected Answer:
CRH
Correct Answer:
CRH
Question 2
1 out of 1 points
Which of these statements accurately describes the somatotrophic effects of growth hormone on bones
and cartilages?
Selected Answer:
All of these are correct
Correct Answer:
All of these are correct
Question 3
1 out of 1 points
Which of the following hormones is NOT secreted by the anterior pituitary gland?
Selected Answer:
erythropoietin
Correct Answer:
erythropoietin
Question 4
1 out of 1 points
A hormone is released by exocytosis, travels through the blood freely, and binds to membrane receptors.
This hormone must be _____.
Selected Answer:
Two of the answers are correct.
Correct Answer:
Two of the answers are correct.
Question 5
1 out of 1 points
"If the pituitary gland is removed from a human subject, which of the following is
likely to occur?"
Selected
Answer:
The adrenal gland will atrophy and plasma cortisol levels will be
reduced
Correct Answer:
The adrenal gland will atrophy and plasma cortisol levels will be
reduced
Question 6
1 out of 1 points
Which of the following is true about phosholipase C?
Selected Answer:
It produces DAG and activates protein kinase C.
Correct Answer:
It produces DAG and activates protein kinase C.
Question 7
1 out of 1 points
What distinguishes endocrine signals from paracrine and autocrine signals?
Selected Answer:
target location
Correct Answer:
target location
Question 8
1 out of 1 points
Which of the following statements about hormone actions is correct?
Selected Answer:
Growth hormone is a tropic hormone for insulin-like growth factor 1
Correct Answer:
Growth hormone is a tropic hormone for insulin-like growth factor 1
Question 9
1 out of 1 points
Which hypothalamic hormone causes release of LH?
Selected Answer:
GnRH
Correct Answer:
GnRH
Question 10
1 out of 1 points
A hormone may be
Selected Answer:
All of the choices could be correct
Correct Answer:
All of the choices could be correct
Question 11
1 out of 1 points
"Which is most likely TRUE of an endocrine cell that contains an abundance of rough
endoplasmic reticulum, a large Golgi apparatus, and secretory granules?"
Selected Answer:
It secretes a peptide/protein hormone
Correct Answer:
It secretes a peptide/protein hormone
Question 12
1 out of 1 points
"A chemical precursor for cortisol is ________, which is made from ________.
Cortisol is secreted by ________ when stimulated by ________ from the anterior
pituitary."
Selected
Answer:
"progesterone, cholesterol, adrenal cortex, adrenocorticotropic
hormone (ACTH)"
Correct
Answer:
"progesterone, cholesterol, adrenal cortex, adrenocorticotropic
hormone (ACTH)"
Question 13
1 out of 1 points
Binding of norepinephrine to beta 2 adrenergic receptors _____
Selected Answer:
activates the cAMP pathway.
Correct Answer:
activates the cAMP pathway.
Question 14
1 out of 1 points
Which of these statements about ADH is correct?
Selected
Answer:
High concentrations of ADH promote arteriolar constriction and increase blood
pressure
Correct Answer:
High concentrations of ADH promote arteriolar constriction and increase blood
pressure
Question 15
1 out of 1 points
Which of these hormones is synthesized and released by the posterior pituitary gland?
Selected Answers:
None of these
Correct Answers:
None of these
Question 16
1 out of 1 points
Which is an example of long-loop negative feedback?
Selected
Answer:
inhibition of growth hormone-releasing hormone (GHRH) release by
insulin-like growth factor-1
Correct
Answer:
inhibition of growth hormone-releasing hormone (GHRH) release by
insulin-like growth factor-1
Question 17
1 out of 1 points
Which is not an effect of cortisol?
Selected Answer:
protein synthesis
Correct Answer:
protein synthesis
Question 18
1 out of 1 points
Which would most directly decrease the production of aldosterone?
Selected Answer:
injecting a drug that blocks the production of angiotensin II
Correct Answer:
injecting a drug that blocks the production of angiotensin II
Question 19
1 out of 1 points
Which of these hormone regulatory pathways is not correctly sequenced?
Selected
Answer:
CRH stimulates the anterior pituitary gland to release ACTH which acts on the adrenal
medulla to release aldosterone
Correct
Answer:
CRH stimulates the anterior pituitary gland to release ACTH which acts on the adrenal
medulla to release aldosterone
Question 20
1 out of 1 points
Which leads to increased plasma calcium levels?
Selected Answer:
parathyroid hormone
Correct Answer:
parathyroid hormone
Question 21
1 out of 1 points
Which accurately describes the median eminence of the hypothalamus?
Selected Answer:
It is a site where neurohormones are release into blood vessels
Correct Answer:
It is a site where neurohormones are release into blood vessels
Question 22
1 out of 1 points
Which of these does not describe an appropriate cardiovascular effect of acute (short term) increase in
plasma thyroid hormone level ?
Selected Answer:
Increased mean arterial pressure
Correct Answer:
Increased mean arterial pressure
Question 23
1 out of 1 points
Which would be the effect of a blood clot that blocked the vessels of the
hypothalamo-pituitary portal system in the infundibulum between the hypothalamus
and the anterior pituitary gland?
Selected
Answer:
secretion of adrenocorticotropic hormone (ACTH) would decrease and
the adrenal cortex would atrophy
Correct
Answer:
secretion of adrenocorticotropic hormone (ACTH) would decrease and
the adrenal cortex would atrophy
Question 24
1 out of 1 points
Which of the hormones listed below has the most profound direct effect to stimulate
the increased resorption of bone when plasma Ca2+ levels decrease?
Selected Answer:
parathyroid hormone
Correct Answer:
parathyroid hormone
Question 25
1 out of 1 points
Deficiency of iodine in the diet results in _____________ caused by
________________.
Selected
Answer:
a goiter; loss of negative feedback by thyroid hormones and increased
thyroid-stimulating hormone (TSH) levels
Correct
Answer:
a goiter; loss of negative feedback by thyroid hormones and increased
thyroid-stimulating hormone (TSH) levels
Question 26
1 out of 1 points
Which is a result of consuming a diet deficient in iodine?
Selected
Answer:
low plasma concentration of thyroid hormones and an enlarged
thyroid gland
Correct
Answer:
low plasma concentration of thyroid hormones and an enlarged
thyroid gland
Question 27
1 out of 1 points
Which of these statements about the metabolic effects of growth hormone is true?
Selected Answers:
All of these are correct
Correct Answers:
All of these are correct
Question 28
1 out of 1 points
A female whose adrenal glands began secreting unusually high levels of androgen
would probably have increased:
Selected Answer:
growth of facial hair
Correct Answer:
growth of facial hair
Question 29
1 out of 1 points
Which of these could be a cause of hypertrophy of the adrenal cortex?
Selected Answer:
excessively rapid clearance of cortisol from the circulation
Correct Answer:
excessively rapid clearance of cortisol from the circulation
Question 30
1 out of 1 points
"If the adrenal glands were removed from a patient, his plasma cortisol levels would
________, secretion of CRH by the __________________ would
__________________, and secretion of ACTH by the ______________ would
_____________."
Selected Answer:
decrease; hypothalamus; increase; adenohypophysis; increase
Correct Answer:
decrease; hypothalamus; increase; adenohypophysis; increase
Question 31
1 out of 1 points
Which is most likely a result of hypersecretion of growth hormone?
Selected Answer:
acromegaly
Correct Answer:
acromegaly
Question 32
1 out of 1 points
In which of these conditions do you suspect that the secretion of growth hormone by the anterior
pituitary gland will be decreased?
Selected
Answer:
A patient receiving shots of growth hormone (for longterm hormone replacement
therapy)
Correct Answer:
A patient receiving shots of growth hormone (for longterm hormone replacement
therapy)
Question 33
1 out of 1 points
Short-loop negative feedback occurs when hormones from the ______________
inhibit hormone secretion by the ______________.
Selected Answer:
anterior pituitary; hypothalamus
Correct Answer:
anterior pituitary; hypothalamus
Question 34
1 out of 1 points
Trevor and Kevin both have signs of hypercortisolism. Blood tests show that Trevor has normal levels of
ACTH, which Kevin's are high. Both have normal levels of CRH. What is the diagnosis for each?
Selected
Answer:
Trevor has primary hypercortisolism due to an adrenal problem, while Kevin has
secondary hypercotisolism due to a pituitary problem.
Correct
Answer:
Trevor has primary hypercortisolism due to an adrenal problem, while Kevin has
secondary hypercotisolism due to a pituitary problem.
Question 35
1 out of 1 points
A deficiency or impaired endogenous synthesis of tyrosine will most likely lead to low plasma levels of
these hormones except:
Selected Answer:
Melatonin
Correct Answer:
Melatonin
Question 36
1 out of 1 points
A hormone is released by diffusion, travels through the blood bound to carrier proteins, and binds
to cytosolic receptors. This hormone must be _____.
Selected Answer:
a steroid hormone.
Correct Answer:
a steroid hormone.
Question 37
1 out of 1 points
Increased TSH production will have these effects on the thyroid gland ?
Selected Answer:
All of these are correct
Correct Answer:
All of these are correct
Question 38
1 out of 1 points
Which is most likely a characteristic of cells that secrete steroid hormones?
Selected
Answer:
They are characterized by abundant smooth endoplasmic reticulum
and few secretory granules
Correct
Answer:
They are characterized by abundant smooth endoplasmic reticulum
and few secretory granules
Question 39
1 out of 1 points
How is the concentration of a hormone in plasma determined?
Selected
Answer:
by its secretion and clearance rates, and whether or not it binds to carriers and/or
other plasma proteins
Correct
Answer:
by its secretion and clearance rates, and whether or not it binds to carriers and/or
other plasma proteins
Question 40
1 out of 1 points
Which of these accurately describes the effect of ADH?
Selected Answer:
b. Arteriolar vasoconstriction
Correct Answer:
b. Arteriolar vasoconstriction
Question 41
1 out of 1 points
The secretion of growth hormone by the somatotrophs of the anterior pituitary gland
can be inhibited under the following conditions except;
Selected Answer:
d. Stress
Correct Answer:
d. Stress
Question 42
1 out of 1 points
Which of these hormones utilizes a tyrosine kinase as a mechanism of target cell
signaling?
Selected Answer:
d. All of these
Correct Answer:
d. All of these
Question 43
1 out of 1 points
In which of these conditions do you suspect that the secretion of growth hormone by the anterior
pituitary gland will be decreased?
Selected
Answer:
A patient receiving shots of growth hormone (for longterm hormone replacement
therapy)
Correct Answer:
A patient receiving shots of growth hormone (for longterm hormone replacement
therapy)
Question 44
1 out of 1 points
Which hypothalamic hormone causes release of LH?
Selected Answer:
GnRH
Correct Answer:
GnRH
Question 45
1 out of 1 points
A deficiency or impaired endogenous synthesis of tyrosine will most likely lead to low plasma levels of
these hormones excpt;
Selected Answer:
Melatonin
Correct Answer:
Melatonin
Question 46
1 out of 1 points
What distinguishes endocrine signals from paracrine and autocrine signals?
Selected Answer:
target location
Correct Answer:
target location
Question 47
1 out of 1 points
Increased TSH production will have these effects on the thyroid gland ?
Selected Answer:
All of these are correct
Correct Answer:
All of these are correct
Question 48
1 out of 1 points
Trevor and Kevin both have signs of hypercortisolism. Blood tests show that Trevor has normal levels of
ACTH, which Kevin's are high. Both have normal levels of CRH. What is the diagnosis for each?
Selected
Answer:
Trevor has primary hypercortisolism due to an adrenal problem, while Kevin has
secondary hypercotisolism due to a pituitary problem.
Correct
Answer:
Trevor has primary hypercortisolism due to an adrenal problem, while Kevin has
secondary hypercotisolism due to a pituitary problem.
Question 49
1 out of 1 points
A hormone is released by diffusion, travels through the blood bound to carrier proteins, and binds
to cytosolic receptors. This hormone must be _____.
Selected Answer:
a steroid hormone.
Correct Answer:
a steroid hormone.
Question 50
1 out of 1 points
Under which of these conditions are you most likely to observe a depression in
plasma prolactin levels?
Selected
Answer:
b. Increased stimulation of dopaminergic neurons of the
hypothalamus
Correct Answer:
b. Increased stimulation of dopaminergic neurons of the
hypothalamus
