NURS 611 EXAM 3 MARYVILLE QUESTIONS AND ANSWERS
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The coronary sinus empties into which cardiac structure? - CORRECT ANSWERS The
cardiac veins empty only into the right atrium through another ostium, the opening of a large
vein called the coronary sinus.
Oxygenated blood flows through which vessel? - CORRECT ANSWERS Only the four
pulmonary veins, two from the right lung and two from the left lung, carry oxygenated blood
from the lungs to the left side of the heart.
When the ventricles relax, blood fills the cusps and causes their free edges to meet in the
middle of the vessel, closing the valve and preventing any backflow. This selection is the only
option that accurately explains why the aortic and pulmonic valves close after the ventricles
contract. - CORRECT ANSWERS During the cardiac cycle, why do the aortic and
pulmonic valves close after the ventricles relax?
The papillary muscles are extensions of the myocardium that pull the cusps together and
downward at the onset of ventricular contraction, thus preventing their backward expulsion
into the atria - CORRECT ANSWERS the heart's valves, what is a function of the
papillary muscles?
What is the process that ensures mitral and tricuspid valve closure after the ventricles are filled
with blood? - CORRECT ANSWERS During ventricular relaxation, the two
atrioventricular valves open and blood flows from the higher pressure atria to the relaxed
ventricles. With increasing ventricular pressure, these valves close and prevent backflow into
the atria as the ventricles contract
Which chamber of the heart endures the highest pressures? - CORRECT ANSWERS
Pressure is greatest in the systemic circulation, driven by the left ventricle.
,NURS 611 EXAM 3 MARYVILLE QUESTIONS AND ANSWERS
LATEST DOWNLOADED 2025/2026 A COMPLETE SOLUTION
ALL ANSWERS 100% CORRECT VERIFIED BEST GRADED A+ FOR
SUCCESS
Which cardiac chamber has the thinnest wall and why? - CORRECT ANSWERS The two
atria have the thinnest walls because they are low-pressure chambers that serve as storage
units and conduits for blood that is emptied into the ventricles. This selection is the only option
that correctly identifies which heart chambers have the thinnest walls and why that helps
cardiac function
The major products secreted by the adrenal medulla are the catecholamines epinephrine
(adrenaline) and norepinephrine - CORRECT ANSWERS Adrenal medulla
Calcitonin, also called thyrocalcitonin, acts to lower serum calcium levels by inhibiting bone-
resorbing osteoclasts, making the other options incorrect. - CORRECT ANSWERS What
is the action of calcitonin?
Target cells for parathyroid hormone are located in the - CORRECT ANSWERS
Parathyroid hormone acts on its plasma membrane receptor only in the distal and proximal
tubules of the kidney's nephron.
Which compound or hormone is secreted by the adrenal medulla? - CORRECT ANSWERS
the catecholamine epinephrine (adrenaline) is the only major product secreted.
Insulin transports which electrolyte in the cell? - CORRECT ANSWERS Insulin facilitates
the intracellular transport of potassium, phosphate, and magnesium. Insulin does not facilitate
the transport of the other electrolytes
Hyperphosphatemia leads to hypocalcemia - CORRECT ANSWERS What effect does
hyperphosphatemia have on other electrolytes
, NURS 611 EXAM 3 MARYVILLE QUESTIONS AND ANSWERS
LATEST DOWNLOADED 2025/2026 A COMPLETE SOLUTION
ALL ANSWERS 100% CORRECT VERIFIED BEST GRADED A+ FOR
SUCCESS
Which mineral is needed for thyroid-stimulating hormone (TSH) to stimulate the secretion of
thyroid hormone (TH)? - CORRECT ANSWERS TSH, which is synthesized and stored in
the anterior pituitary, stimulates secretion of TH by activating intracellular processes, including
the uptake of iodine necessary for the synthesis of TH.
Releasing and inhibitory hormones are synthesized in the hypothalamus and are secreted into
the portal blood vessels through which they travel to the anterior pituitary hormones -
CORRECT ANSWERS The releasing hormones that are made in the hypothalamus travel
to the anterior pituitary via the
ADH and oxytocin are synthesized in hypothalamic neurons but are stored and secreted by the
posterior pituitary. - CORRECT ANSWERS Where is oxytocin synthesized?
Once synthesized in the hypothalamus, ADH acts on the vasopressin 2 (V2) receptors of the
renal duct cells to increase their permeability - CORRECT ANSWERS Where is
antidiuretic hormone (ADH) synthesized, and where does it act?
What is the target tissue for prolactin-releasing factor? - CORRECT ANSWERS Prolactin-
releasing factor targets the anterior pituitary gland to stimulate the secretion of prolactin
Antidiuretic hormone acts to cause vasoconstriction when: - CORRECT ANSWERS ADH
was originally named vasopressin because, in extremely high doses, it causes vasoconstriction
and a resulting increase in arterial blood pressure. However, significant vasoconstriction may
only be achieved pharmacologically
Which hormone inhibits the secretion of growth hormone (GH)? - CORRECT ANSWERS
Two hormones from the hypothalamus control GH secretion: (1) GH-releasing hormone
(GHRH), which increases GH secretion; and (2) somatostatin, which inhibits it.
LATEST DOWNLOADED 2025/2026 A COMPLETE SOLUTION
ALL ANSWERS 100% CORRECT VERIFIED BEST GRADED A+ FOR
SUCCESS
The coronary sinus empties into which cardiac structure? - CORRECT ANSWERS The
cardiac veins empty only into the right atrium through another ostium, the opening of a large
vein called the coronary sinus.
Oxygenated blood flows through which vessel? - CORRECT ANSWERS Only the four
pulmonary veins, two from the right lung and two from the left lung, carry oxygenated blood
from the lungs to the left side of the heart.
When the ventricles relax, blood fills the cusps and causes their free edges to meet in the
middle of the vessel, closing the valve and preventing any backflow. This selection is the only
option that accurately explains why the aortic and pulmonic valves close after the ventricles
contract. - CORRECT ANSWERS During the cardiac cycle, why do the aortic and
pulmonic valves close after the ventricles relax?
The papillary muscles are extensions of the myocardium that pull the cusps together and
downward at the onset of ventricular contraction, thus preventing their backward expulsion
into the atria - CORRECT ANSWERS the heart's valves, what is a function of the
papillary muscles?
What is the process that ensures mitral and tricuspid valve closure after the ventricles are filled
with blood? - CORRECT ANSWERS During ventricular relaxation, the two
atrioventricular valves open and blood flows from the higher pressure atria to the relaxed
ventricles. With increasing ventricular pressure, these valves close and prevent backflow into
the atria as the ventricles contract
Which chamber of the heart endures the highest pressures? - CORRECT ANSWERS
Pressure is greatest in the systemic circulation, driven by the left ventricle.
,NURS 611 EXAM 3 MARYVILLE QUESTIONS AND ANSWERS
LATEST DOWNLOADED 2025/2026 A COMPLETE SOLUTION
ALL ANSWERS 100% CORRECT VERIFIED BEST GRADED A+ FOR
SUCCESS
Which cardiac chamber has the thinnest wall and why? - CORRECT ANSWERS The two
atria have the thinnest walls because they are low-pressure chambers that serve as storage
units and conduits for blood that is emptied into the ventricles. This selection is the only option
that correctly identifies which heart chambers have the thinnest walls and why that helps
cardiac function
The major products secreted by the adrenal medulla are the catecholamines epinephrine
(adrenaline) and norepinephrine - CORRECT ANSWERS Adrenal medulla
Calcitonin, also called thyrocalcitonin, acts to lower serum calcium levels by inhibiting bone-
resorbing osteoclasts, making the other options incorrect. - CORRECT ANSWERS What
is the action of calcitonin?
Target cells for parathyroid hormone are located in the - CORRECT ANSWERS
Parathyroid hormone acts on its plasma membrane receptor only in the distal and proximal
tubules of the kidney's nephron.
Which compound or hormone is secreted by the adrenal medulla? - CORRECT ANSWERS
the catecholamine epinephrine (adrenaline) is the only major product secreted.
Insulin transports which electrolyte in the cell? - CORRECT ANSWERS Insulin facilitates
the intracellular transport of potassium, phosphate, and magnesium. Insulin does not facilitate
the transport of the other electrolytes
Hyperphosphatemia leads to hypocalcemia - CORRECT ANSWERS What effect does
hyperphosphatemia have on other electrolytes
, NURS 611 EXAM 3 MARYVILLE QUESTIONS AND ANSWERS
LATEST DOWNLOADED 2025/2026 A COMPLETE SOLUTION
ALL ANSWERS 100% CORRECT VERIFIED BEST GRADED A+ FOR
SUCCESS
Which mineral is needed for thyroid-stimulating hormone (TSH) to stimulate the secretion of
thyroid hormone (TH)? - CORRECT ANSWERS TSH, which is synthesized and stored in
the anterior pituitary, stimulates secretion of TH by activating intracellular processes, including
the uptake of iodine necessary for the synthesis of TH.
Releasing and inhibitory hormones are synthesized in the hypothalamus and are secreted into
the portal blood vessels through which they travel to the anterior pituitary hormones -
CORRECT ANSWERS The releasing hormones that are made in the hypothalamus travel
to the anterior pituitary via the
ADH and oxytocin are synthesized in hypothalamic neurons but are stored and secreted by the
posterior pituitary. - CORRECT ANSWERS Where is oxytocin synthesized?
Once synthesized in the hypothalamus, ADH acts on the vasopressin 2 (V2) receptors of the
renal duct cells to increase their permeability - CORRECT ANSWERS Where is
antidiuretic hormone (ADH) synthesized, and where does it act?
What is the target tissue for prolactin-releasing factor? - CORRECT ANSWERS Prolactin-
releasing factor targets the anterior pituitary gland to stimulate the secretion of prolactin
Antidiuretic hormone acts to cause vasoconstriction when: - CORRECT ANSWERS ADH
was originally named vasopressin because, in extremely high doses, it causes vasoconstriction
and a resulting increase in arterial blood pressure. However, significant vasoconstriction may
only be achieved pharmacologically
Which hormone inhibits the secretion of growth hormone (GH)? - CORRECT ANSWERS
Two hormones from the hypothalamus control GH secretion: (1) GH-releasing hormone
(GHRH), which increases GH secretion; and (2) somatostatin, which inhibits it.
