Emergency Medical Technician (EMT) Intermediate Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Emergency Medical Technician (EMT) Intermediate Test with focused study methods including flashcards and multiple-choice questions. Practice with hints and detailed explanations to boost your readiness for the exam.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

The left main coronary artery divides into which of the following branches?

Right coronary artery and left circumflex artery
Left anterior descending and right coronary artery
Left anterior descending and circumflex arteries
Right anterior descending and left posterior artery

The correct answer is: Left anterior descending and circumflex arteries

The left main coronary artery is a critical component of the heart's blood supply, responsible for delivering oxygenated blood to a significant portion of the heart muscle. It typically divides into two main branches: the left anterior descending artery and the circumflex artery. The left anterior descending artery runs down the anterior interventricular sulcus and supplies blood to the front of the left side of the heart, including the left ventricle and part of the interventricular septum. The circumflex artery travels around the heart's left side and supplies blood to the lateral aspect of the left atrium and ventricle. Understanding the function and supply areas of these branches is essential for recognizing and managing cardiac conditions. The other options listed do not accurately represent the anatomical division of the left main coronary artery.