Anatomy

Question 1

What are the four major structures that are closely related to the mitral valve?

Answer 1

Coronary sinus
Circumflex artery
Bundle of His (posteromedial commissure)
Aortic root

Question 2

What are the papillary muscles of the RV?

Answer 2

Medial papillary (lancisi)
Anterior papillary
Inferior papillary

Question 3

Which RV papillary muscle is close to the moderator band?

Answer 3

Anterior pap

Question 4

Which RV papillary muscle is close to the right bundle branch?

Answer 4

Medial papillary

Question 5

What are the 4 structures related to the TV?

Answer 5

Aortic root
Right coronary artery (anterior)
AV node
Triangle of Koch (coronary sinus)

Question 6

What are the borders and contents of the triangle of Koch

Answer 6

Borders
Coronary sinus
Tricuspid annulus
IVC - tendon of todaro

Contents
AV node

Question 7

What are the layers of the pericardium?

Answer 7

Fibrous
Parietal
Visceral pericardium

Question 8

What are the divisions of the LAD and what are the borders??

Answer 8

Proximal - start to 1st septal
Middle - 1st septal to last diagonal
Distal - after the last diagonal

Question 9

What percentage of patients have a left sided coronary supply for the SA node?

Answer 9

45%

Question 10

What percentage of patients have a left sided coronary supply for the AV node?

Answer 10

15%

Question 11

What areas of Koch’s Triangle are associated with the different AV nodal pathways?

Answer 11

AV Node/Fast Pathway - anterior near membranous septum

Slow Pathway - posterior near coronary sinus