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NR509 Week 4 Exam Question & Answers 2024
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NR509 Week 4 Exam Question & Answers2024
The sac that surrounds and protects the heart is called the:
a. Pericardium.
b. Myocardium.
c. Endocardium.
d. Pleural space. - Correct Answers ✅a. Pericardium.
The direction of blood flow through the heart is best described by
which of these?
a. Vena cava - right atrium - right ventricle - lungs - pulmonary artery -
left atrium - left ventricle
b. Right atrium - right ventricle - pulmonary artery - lungs - pulmonary
vein - left atrium - left ventricle
c. Aorta - right atrium - right ventricle - lungs - pulmonary vein - left
atrium - left ventricle - vena cava
d. Right atrium - right ventricle - pulmonary vein - lungs - pulmonary
artery - left atrium - left ventricle - Correct Answers ✅b. Right
atrium - right ventricle - pulmonary artery - lungs - pulmonary vein - left
atrium - left ventricle
The nurse is reviewing the anatomy and physiologic functioning of the
heart. Which statement best describes what is meant by atrial kick?
a. The atria contract during systole and attempt to push against closed
valves.
,NR509 Week 4 Exam Question & Answers
2024
b. Contraction of the atria at the beginning of diastole can be felt as a
palpitation.
c... Atrial kick is the pressure exerted against the atria as the ventricles
contract during systole.
d. The atria contract toward the end of diastole and push the remaining
blood into the ventricles. - Correct Answers ✅d. The atria
contract toward the end of diastole and push the remaining blood into
the ventricles.
When listening to heart sounds, the nurse knows the valve closures
that can be heard best at the base of the heart are:
a. Mitral and tricuspid.
b. Tricuspid and aortic.
c. Aortic and pulmonic.
d. Mitral and pulmonic. - Correct Answers ✅c. Aortic and
pulmonic.
Which of these statements describes the closure of the valves in a
normal cardiac cycle?
a. The aortic valve closes slightly before the tricuspid valve.
b. The pulmonic valve closes slightly before the aortic valve.
c. The tricuspid valve closes slightly later than the mitral valve.
,NR509 Week 4 Exam Question & Answers
2024
d. Both the tricuspid and pulmonic valves close at the same time. -
Correct Answers ✅c. The tricuspid valve closes slightly later
than the mitral valve.
The component of the conduction system referred to as the pacemaker
of the heart is the:
a. Atrioventricular (AV) node.
b. Sinoatrial (SA) node.
c. Bundle of His.
d. Bundle branches. - Correct Answers ✅b. Sinoatrial (SA) node.
The electrical stimulus of the cardiac cycle follows which sequence?
a. AV node - SA node - bundle of His
b. Bundle of His - AV node - SA node
c. SA node - AV node - bundle of His - bundle branches
d. AV node - SA node - bundle of His - bundle branches - Correct
Answers ✅d. AV node - SA node - bundle of His - bundle
branches
The findings from an assessment of a 70-year-old patient with swelling
in his ankles include jugular venous pulsations 5 cm above the sternal
angle when the head of his bed is elevated 45 degrees. The nurse
knows that this finding indicates:
, NR509 Week 4 Exam Question & Answers
2024
a. Decreased fluid volume.
b... Increased cardiac output.
c. Narrowing of jugular veins.
d. Elevated pressure related to heart failure. - Correct Answers
✅d. Elevated pressure related to heart failure.
When assessing a newborn infant who is 5 minutes old, the nurse
knows which of these statements to be true?
a. The left ventricle is larger and weighs more than the right ventricle.
b. The circulation of a newborn is identical to that of an adult.
c. Blood can flow into the left side of the heart through an opening in
the atrial septum.
d... The foramen ovale closes just minutes before birth, and the ductus
arteriosus closes immediately after. - Correct Answers ✅c.
Blood can flow into the left side of the heart through an opening in the
atrial septum.
A 25-year-old woman in her fifth month of pregnancy has a blood
pressure of 100/70 mm Hg. In reviewing her previous examination, the
nurse notes that her blood pressure in her second month was 124/80
mm Hg. In evaluating this change, what does the nurse know to be
true?
a. This decline in blood pressure is the result of peripheral
vasodilatation and is an expected change.
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