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Questions and Answers
Which artery supplies blood to the interventricular septum and anterior walls of both ventricles?
Which coronary artery supplies the left atrium and the posterior walls of the left ventricle?
Which artery serves the myocardium of the lateral right side of the heart?
Which artery runs toward the left side of the heart and divides into two major branches?
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Which coronary artery merges with the anterior interventricular artery near the apex of the heart?
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From where do both the left and right coronary arteries arise?
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Study Notes
Coronary Arteries
- The left and right coronary arteries originate from the base of the aorta and encircle the heart in the coronary sulcus.
- They provide the arterial supply of the coronary circulation.
Left Coronary Artery
- Runs toward the left side of the heart and divides into two major branches.
- Anterior interventricular artery (also known as the left anterior descending artery):
- Follows the anterior interventricular sulcus.
- Supplies blood to the interventricular septum and anterior walls of both ventricles.
- Circumflex artery:
- Supplies the left atrium and posterior walls of the left ventricle.
Right Coronary Artery
- Courses to the right side of the heart and gives rise to two branches.
- Right marginal artery:
- Serves the myocardium of the lateral right side of the heart.
- Posterior interventricular artery:
- Runs to the heart apex and supplies the posterior ventricular walls.
- Merges (anastomoses) with the anterior interventricular artery near the heart apex.
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Description
Test your knowledge on the left and right coronary arteries, their origins, and the arterial supply of the coronary circulation. Learn about the major branches of the left coronary artery and their functions.
