Questions for Exam 3 2026
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The sac that surrounds and protects the heart is called the:
a. Pericardium.
b. Myocardium.
c. Endocardium.
d. Pleural space. - ANSWER ✔✔a. Pericardium
,The direction of blood flow through the heart is best described by which
of these? - ANSWER ✔✔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? -
ANSWER ✔✔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: - ANSWER ✔✔Aortic
and pulmonic.
Which of these statements describes the closure of the valves in a
normal cardiac circle?
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.
d. Both the tricuspid and pulmonic valves close at the same time. -
ANSWER ✔✔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. - ANSWER ✔✔b. Sinoatrial (SA) node
The electrical stimulus of the cardiac cycle follows which sequence? -
ANSWER ✔✔AV node SA node bundle of His bundle branches
The findings from an assessment of a 70-year-old patient with swelling
in his ankle 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 findings indicate: - ANSWER ✔✔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
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, 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. - ANSWER ✔✔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.
b. Because of increased cardiac output, the blood pressure should be
higher at this time.
c. This change in blood pressure is not an expected finding because it
means a decrease in cardiac.
d. This decline in blood pressure means a decrease in circulating blood
volume, which is dangerous for the fetus. - ANSWER ✔✔a. This