Week 21 - Great vessels

Question 1

Name the three vessels which drain into the right atrium.

Answer 1

Name the three vessels which drain into the right atrium.

1. SVC
2. IVC
3. Coronary sinus

Question 2

Complete occlusion of the left anterior descending artery in results in an acute myocardial infarction and rupture of the left anterolateral papillary muscle of the left ventricle. This can lead to regurgitation of which valve?

Complete occlusion of the left anterior descending artery in results in an acute myocardial infarction and rupture of the left anterolateral papillary muscle of the left ventricle. This can lead to regurgitation of which valve?

• a) Mitral valve
• b) Tricuspid valve
• c) Aortic valve
• d) Pulmonary valve
• e) Pyloric valve

Answer 2

Mitral valve

Question 3

What structure(s) form the a) right and b) left heart border?

Answer 3

Right border of heart = Right atrium

Left border of heart = Left ventricle

• Right border – Right atrium
• Inferior border – Left ventricle and right ventricle
• Left border – Left ventricle (and some of the left atrium)
• Superior border – Right and left atrium and the great vessels

Question 4

Name the coronary artery that usually (in 70-80% of the population) supplies the atrioventricular node.

Answer 4

AV usually supplied by Right Coronary Artery

Question 5

The sinoatrial node is found within the wall of the:

• a) Right ventricle
• b) Left atrium
• c) Right atrium
• d) Left ventricle
• e) Interventricular septum

Answer 5

SA node = The sinoatrial node is located in the upper part of the right atrium in the healthy heart, and serves as the natural pacemaker.

Both SA node & AV node are located in the wall of the Right Atrium