Coronary Arteries and Their Functions

This video tutorial provides an overview of coronary circulation, explaining the blood vessels that supply blood to the heart. It covers the great vessels, including the aorta and pulmonary trunk, and details the right and left coronary arteries and their branches. The tutorial also discusses the anterior and posterior interventricular arteries, commonly known as the left anterior descending artery (LAD) by surgeons. Additionally, it highlights the nodal branch, which supplies the sinoatrial node, the heart's major pacemaker. The video concludes with a summary of the coronary circulation system.

What is the primary function of coronary circulation?

• To supply blood to the brain

• To supply blood to the liver

• To supply blood to the lungs

• To supply blood to the heart

Which vessel is NOT considered a great vessel of the heart?

• Aorta

• Pulmonary trunk

• Right coronary artery

• Superior vena cava

Where do the right and left coronary arteries originate?

• From the pulmonary trunk

• From the inferior vena cava

• From the superior vena cava

• From the aorta just after the aortic valve

Which artery is a branch of the left coronary artery?

• Superior vena cava

• Circumflex artery

• Posterior interventricular artery

• Right marginal branch

What is another name for the anterior interventricular artery?

• Right marginal artery

• Posterior interventricular artery

• Circumflex artery

• Left anterior descending artery

Which artery runs around to the posterior side of the heart?

• Superior vena cava

• Anterior interventricular artery

• Circumflex artery

• Right coronary artery

What is the term used by surgeons for the left anterior descending artery?

• Left anterior descending artery

• Circumflex artery

• Right marginal artery

• Anterior interventricular artery

What is the significance of the anastomosis between coronary arteries?

• It allows blood flow between the right and left coronary arteries

• It prevents blood flow to the heart

• It connects the heart to the brain

• It supplies blood to the lungs

Which branch is responsible for supplying the sinoatrial node?

• Posterior interventricular artery

• Circumflex artery

• Nodal branch

• Right marginal branch

What is the role of the sinoatrial node in the heart?

• It prevents blood flow to the heart

• It acts as the heart's major pacemaker

• It connects the heart to the brain

• It supplies blood to the lungs