Anatomy

Question 1

SA and AV nodes supplied by what artery

Answer 1

Right coronary artery

Question 2

Right dominant circulation

Answer 2

Posterior descending/interventricular artery which arises from Right coronary artery (85%)

Question 3

Left dominant ciruclation

Answer 3

Posterior descending/interventricular artery from the left circumflex coronary artery (8%)

Question 4

Codominant circulation

Answer 4

Posterior descending/interventricular artery from both LCX and RCA (7%)

Question 5

Coronary artery occlusion most commonly occurs in

Answer 5

Left anterior descending artery

Question 6

Coronary arteries fill during - systole or diastole?

Answer 6

Diastole

Question 7

Acute marginal artery branches from what and supplies what

Answer 7

Branches from RCA and supplies RV

Question 8

Posterior descending/interventricular artery supplies what

Answer 8

Posterior 1/3 of interventricular septum and posterior walls of ventricles

Question 9

Left anterior descending artery branches from and supplies

Answer 9

Branches from LCA

Supplies anterior 2/3 of interventricular septum, anterior papillary muscles, and anterior surface of left ventricle

Question 10

Left circumflex coronary branches from and supplies

Answer 10

Branches from LCA

Supplies lateral and posterior walls of left ventricle

Question 11

What is the most posterior part of the heart? What can enlargement caused?

Answer 11

Left atrium
Enlargement can cause dysphagia (compression of the esophagus) or hoarseness (compression of left recurrent laryngeal nerve)

Question 12

What part of the heart does the left coronary artery supply?

Answer 12

Left atrium
Lateral wall of the left ventricle
Posterior wall of the left ventricle

Question 13

What does the marginal branch of the right coronary artery supply?

Answer 13

The right atrium and right ventricle