Coronary Arteries and Infarcts

The video tutorial explains the arterial blood supply to the heart, focusing on the right and left coronary arteries (RCA and LCA). It details the branches of these arteries and the specific regions of the heart they supply. The tutorial also discusses the potential effects of blockages in these arteries, such as infarcts in different parts of the heart.

What are the two main arteries that supply blood to the heart?

• Pulmonary artery and aorta

• Right coronary artery and left coronary artery

• Carotid artery and subclavian artery

• Femoral artery and brachial artery

Which branch of the RCA supplies the inferior margin of the right ventricle?

• Atrial branches

• Right marginal branch

• Posterior descending artery

• Conus artery

What is the main function of the conus artery?

• Supply the anterior and lateral surface of the right atria

• Supply the SA node

• Supply the inferior margin of the right ventricle

• Supply the posterior left atrium

Where does the left coronary artery (LCA) originate from?

• Anterior aorta

• Posterior aorta

• Right atrioventricular groove

• Left atrioventricular groove

Which artery runs down the anterior interventricular groove?

• Right coronary artery

• Left circumflex artery

• Left anterior descending artery

• Posterior descending artery

What does the left circumflex artery supply?

• Anterior wall of the left ventricle

• Posterior left atrium and left ventricle

• Inferior margin of the right ventricle

• Right atrium and right ventricle

What is the result of a blockage in the LAD?

• Inferior wall infarcts

• Lateral wall infarcts

• Posterior wall infarcts

• Anterior wall infarcts

Which artery is associated with lateral infarcts?

• Posterior descending artery

• Right coronary artery

• Left circumflex artery

• Left marginal branch

What area does the right marginal branch supply?

• Lateral left ventricle

• Anterior right atrium

• Inferior portion of the right ventricle

• Posterior left atrium

Which artery is associated with posterior infarcts?

• Left anterior descending artery

• Right coronary artery

• Posterior descending artery

• Left circumflex artery