In what way does the coronary artery supply affect ventricular function?
The right coronary artery supplies the inferior wall of the left ventricle
The circumflex artery supplies the anterior wall of the left ventricle
The circumflex artery supplies the interventricular septum, crucial for left ventricular function
The left anterior descending artery exclusively supplies the right ventricle
The Correct Answer is A
A. The right coronary artery supplies the inferior wall of the left ventricle:
The right coronary artery (RCA) typically supplies the inferior wall of the left ventricle, the right atrium, right ventricle, and part of the conduction system. Occlusion can lead to inferior myocardial infarction and conduction abnormalities, affecting ventricular function.
B. The circumflex artery supplies the anterior wall of the left ventricle:
The circumflex artery usually supplies the lateral and posterior walls of the left ventricle, not the anterior wall. The left anterior descending (LAD) artery supplies the anterior wall. Misidentification can affect understanding of myocardial infarction patterns.
C. The circumflex artery supplies the interventricular septum, crucial for left ventricular function:
The interventricular septum is primarily supplied by the LAD artery, not the circumflex artery. The septum is crucial for coordinated left ventricular contraction.
D. The left anterior descending artery exclusively supplies the right ventricle:
The LAD artery primarily supplies the anterior wall and interventricular septum of the left ventricle, not the right ventricle. Misunderstanding this can lead to errors in predicting areas affected during infarction.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Left ventricle:
The left ventricle is the main pumping chamber of the systemic circulation, sending oxygenated blood through the aorta to all tissues. Its thick muscular walls generate the high pressure necessary for systemic perfusion.
B. Right ventricle:
The right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery, not to the systemic circulation.
C. Left atrium:
The left atrium receives oxygenated blood from the lungs and delivers it to the left ventricle; it does not generate enough force for systemic circulation.
D. Right atrium:
The right atrium receives systemic venous blood and delivers it to the right ventricle; it does not pump oxygen-rich blood to the body.
Correct Answer is C
Explanation
A. Epicardium:
The epicardium is the outer layer of the heart that provides protection and contains blood vessels but is not responsible for contraction.
B. Pericardium:
The pericardium is a fibrous sac surrounding the heart that provides protection and reduces friction; it does not contain muscle tissue.
C. Myocardium:
The myocardium is the thick middle layer of cardiac muscle responsible for generating the force of contraction necessary for pumping blood throughout the body. It is metabolically active and highly dependent on coronary artery perfusion.
D. Endocardium:
The endocardium lines the interior of the heart chambers and valves; it provides a smooth surface for blood flow but does not contract.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.