Exercises in Arrhythmia Interpretation
8th Edition
Author(s)Jane Huff
,The nurse reviews a cardiac anatomy diagram showing
structures that regulate one-way blood flow through the heart.
Which structure prevents backflow of blood from the left
ventricle into the left atrium during ventricular contraction?
A. Pulmonic valve
B. Tricuspid valve
C. Mitral valve
D. Aortic valve
Correct Answer: C
Rationale:
The mitral valve lies between the left atrium and left ventricle
and prevents backflow into the left atrium during ventricular
systole. The tricuspid valve is on the right side of the heart. The
aortic and pulmonic valves are semilunar valves located at
ventricular outflow tracts.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 2
Blood returning from the systemic circulation enters the heart
through which chamber first?
,A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Correct Answer: B
Rationale:
Deoxygenated blood from the body returns to the right atrium
through the venae cavae. It then passes through the tricuspid
valve into the right ventricle.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 3
Which valve is located between the right atrium and right
ventricle?
A. Mitral valve
B. Aortic valve
C. Tricuspid valve
D. Pulmonic valve
Correct Answer: C
Rationale:
The tricuspid valve separates the right atrium from the right
ventricle and ensures one-way blood flow during the cardiac
cycle.
, Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 4
After blood leaves the right ventricle, where does it travel next?
A. Aorta
B. Left atrium
C. Pulmonary artery
D. Coronary sinus
Correct Answer: C
Rationale:
Blood exits the right ventricle through the pulmonic valve and
enters the pulmonary artery for transport to the lungs.
Source:
ECG Workout: Exercises in Arrhythmia Interpretation, 8th
Edition – Chapter 1
Question 5
Oxygenated blood returning from the lungs enters which heart
chamber?
A. Right atrium
B. Right ventricle
C. Left ventricle
D. Left atrium
Correct Answer: D