NUR 611 EXAM QUESTIONS AND ANSWERS GRADED A+
Which mineral is needed for thyroid-stimulating hormone (TSH) to
stimulate the secretion of thyroid hormone (TH)? ANS >> Iodide.
What are clinical manifestations of hypothyroidism? ANS >> decreased
energy metabolism, resulting in constipation, bradycardia, and lethargy
Thyroid-stimulating hormone (TSH) is released to stimulate thyroid
hormone (TH) and is inhibited when plasma levels of TH are adequate.
This is an example of: ANS >> Negative feedback.
Lipid-soluble hormone receptors are located: ANS >> Inside the plasma
membrane in the cytoplasm.
The releasing hormones that are made in the hypothalamus travel to
the anterior pituitary via the: ANS >> Portal hypophyseal blood vessels.
,NUR 611 EXAM
What effect does hyperphosphatemia have on other electrolytes? ANS >>
Decreases serum calcium. .
Insulin transports which electrolyte in the cell? ANS >> Potassium.
Which second messenger is stimulated by epinephrine binding to a β-
adrenergic receptor? ANS >> Cyclic adenosine monophosphate (cAMP).
These molecules are the initial link between the first signal (hormone)
and the inside of the cell. For example, the binding of epinephrine to a
β adrenergic-receptor subtype activates (through a stimulatory G
protein) the enzyme, adenylyl cyclase. Adenylyl cyclase catalyzes the
conversion of adenosine triphosphate (ATP) to the second messenger,
3', and
Regulation of the release of catecholamines from the adrenal medulla is
an example of which type of regulation? ANS >> Neural.
Which hormone does the second messenger calcium (Ca++) bind to
activate phospholipase C through a G protein? ANS >> Angiotensin II.
this bodily element is considered an important second messenger that
facilitates the binding of a hormone (e.g., norepinephrine, angiotensin
II) to a surface receptor, activating the enzyme phospholipase C through
a G protein inside the plasma membrane.
The control of calcium in cells is important because it: ANS >> Acts as a
second messenger
,NUR 611 EXAM
Where is antidiuretic hormone (ADH) synthesized, and where does it
act? ANS >> Hypothalamus; renal tubular cells.
How does a faulty negative-feedback mechanism result in a hormonal
imbalance? ANS >> Excessive hormone production results from a failure
to turn off the system.
A deficiency of which chemical may result in hypothyroidism? ANS >>
iodine.
What imbalance lessens the rate of secretion of parathyroid hormone
ANS >> Increased serum calcium levels.
Which condition may result from pressure exerted by a pituitary tumor?
ANS >> Hypothyroidism.
Which substance is a water-soluble protein hormone? ANS >> Insulin.
Which of the following is a lipid-soluble hormone? ANS >> Cortisol.
When insulin binds its receptors on muscle cells, an increase in glucose
uptake by the muscle cells is the result. This is an example of what type
of effect by a hormone? ANS >> Direct.
, NUR 611 EXAM
Graves disease develops from a(n): ANS >> Viral infection of the thyroid
gland that causes overproduction of thyroid hormone. Autoimmune
process during which lymphocytes and fibrous tissue replace thyroid
tissue.
Pathologic changes associated with Graves disease include: ANS >> High
levels of circulating thyroid-stimulating immunoglobulins.
The signs of thyrotoxic crisis include: ANS >> Hyperthermia and
tachycardia
The level of thyroid-stimulating hormone (TSH) in individuals with
Graves disease is usually: ANS >> Low.
Palpation of the neck of a person diagnosed with Graves disease would
detect a thyroid that is: ANS >> Diffusely enlarged.
The effects of the syndrome of inappropriate antidiuretic hormone
(SIADH) secretion include solute: ANS >> Retention and water loss
The common cause of elevated levels of antidiuretic hormone (ADH)
secretion is: ANS >> Ectopically produced ADH