1|Pag e
NR509 WEEK 4 EXAM|| QUESTIONS AND 100%
CORRECT ANSWERS GRADED A+|| LATEST
AND COMPLETE VERSION 2024-2025 WITH
EXPERT VERIFIED SOLUTIONS FOR
ASSURED PASS|| BRAND NEW!!!
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?
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 - ANSWER: 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.
b. Contraction of the atria at the beginning of diastole can be felt as a palpitation.
,2|Pag e
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. - ANSWER: 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. - ANSWER: 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.
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.
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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 - ANSWER: 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:
a. Decreased fluid volume.
b... Increased cardiac output.
c. Narrowing of jugular veins.
d. Elevated pressure related to heart failure. - ANSWER: 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. - 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
NR509 WEEK 4 EXAM|| QUESTIONS AND 100%
CORRECT ANSWERS GRADED A+|| LATEST
AND COMPLETE VERSION 2024-2025 WITH
EXPERT VERIFIED SOLUTIONS FOR
ASSURED PASS|| BRAND NEW!!!
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?
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 - ANSWER: 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.
b. Contraction of the atria at the beginning of diastole can be felt as a palpitation.
,2|Pag e
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. - ANSWER: 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. - ANSWER: 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.
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.
, 3|Pag e
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 - ANSWER: 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:
a. Decreased fluid volume.
b... Increased cardiac output.
c. Narrowing of jugular veins.
d. Elevated pressure related to heart failure. - ANSWER: 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. - 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
