Left coronary artery

The video tutorial discusses the coronary circulation, focusing on the left coronary artery. It explains how the coronary arteries supply blood to the heart muscle, with the left coronary artery arising from the aortic sinuses and supplying various parts of the heart. The tutorial details the two main branches of the left coronary artery: the circumflex branch and the anterior interventricular branch. The video concludes by promoting Kenhub as a resource for further anatomy learning.

What is the primary function of the coronary circulation?

• To supply blood to the lungs

• To nourish the heart muscle

• To remove waste from the body

• To transport oxygen to the brain

Where do the left and right coronary arteries originate from?

• The right ventricle

• The ascending aorta

• The left atrium

• The pulmonary artery

Which part of the heart does the left coronary artery supply in approximately 40% of the population?

• The pulmonary valve

• The sinoatrial node

• The right atrium

• The left atrium

What is the role of the circumflex branch of the left coronary artery?

• To supply the interventricular septum

• To supply the anterior surface of the heart

• To supply the posterior surface of the heart

• To supply the right ventricle

Where does the anterior interventricular branch of the left coronary artery anastomose?

• With the posterior interventricular artery

• With the pulmonary artery

• With the aortic valve

• With the circumflex artery