CVS Practice Test 2025 - Free CVS Practice Questions and Study Guide

The left coronary artery branches into two significant arteries, the left anterior descending artery (LAD) and the left circumflex artery (LCX). The LAD is essential for supplying blood to the front part of the heart, particularly the ventricles and the interventricular septum, while the LCX primarily supplies blood to the lateral and posterior aspects of the heart.

Choosing the correct answer emphasizes the anatomical relationship and function of these arteries in ensuring adequate blood flow to critical heart regions. The left anterior descending artery's role in supplying the anterior portion of the heart and the left circumflex artery's function in supplying the lateral wall make them vital for maintaining heart function.

The other options incorrectly include the right coronary artery, which is a separate branch of the aorta, not arising from the left coronary artery. Understanding these anatomical distinctions is crucial for grasping coronary circulation and the heart's blood supply.