Coronary Circulation and Drainage

The lecture discusses the venous drainage of the heart, focusing on the coronary sinus and major veins like the great, middle, and small cardiac veins. It also reviews the coronary arteries, including the right and left coronary arteries, and their branches. The venous system returns deoxygenated blood to the right atrium, primarily through the coronary sinus, which collects blood from various cardiac veins.

What is the primary focus of the lecture on venous drainage of the heart?

• The arterial supply to the brain

• The venous drainage of the heart

• The respiratory system

• The lymphatic system

Which artery arises from the ascending aorta and supplies the right atrium and ventricle?

• Right coronary artery

• Circumflex artery

• Anterior interventricular artery

• Left coronary artery

In most people, which artery is a branch of the right coronary artery?

• Marginal artery

• Posterior interventricular artery

• Circumflex artery

• Anterior interventricular artery

What is the main branch of the left coronary artery that supplies the lateral parts of the left ventricle?

• Marginal artery

• Posterior interventricular artery

• Right coronary artery

• Circumflex artery

Which artery runs in the interventricular groove and supplies the left ventricle?

• Marginal artery

• Anterior interventricular artery

• Circumflex artery

• Right coronary artery

What is the primary function of the coronary sinus?

• Drain deoxygenated blood from the heart

• Regulate heart rhythm

• Supply oxygenated blood to the heart

• Supply nutrients to the heart

Which vein runs in the interventricular groove and continues as the coronary sinus?

• Anterior cardiac vein

• Small cardiac vein

• Great cardiac vein

• Middle cardiac vein

Which vein drains the posterior wall of the left ventricle?

• Great cardiac vein

• Small cardiac vein

• Middle cardiac vein

• Anterior cardiac vein

Which veins bring blood directly into the right atrium?

• Great cardiac veins

• Small cardiac veins

• Middle cardiac veins

• Anterior cardiac veins

Which vein accompanies the marginal branch of the right coronary artery?

• Middle cardiac vein

• Great cardiac vein

• Small cardiac vein

• Anterior cardiac vein