CV anatomy

Question 1

LCX

Answer 1

Lateral and posterior wall of left ventricle

Question 2

LAD

Answer 2

Anterior 2/3 of interventricular septum,
anterior papillary muscle,
anterior surface of left ventricle

Question 3

PD/interventricular artery

Answer 3

Posterior 1/3 of interventricular septum (vs. LAD)

Posterior wall of ventricles.

Question 4

Right dominant circulation

Answer 4

85%,

PD arises from RCA

Question 5

Left dominant circulation

Answer 5

8%

PD arises from LCX

Question 6

Codominant circulation

Answer 6

7%,

PD arises from both RCA and LCX

Question 7

Coronary artery occlusion most common in?

Answer 7

LAD

Question 8

SA and AV node supplied by

Answer 8

RCA

Question 9

Coronary artery fills during

Answer 9

disastole

Question 10

The most posterior part of the heart

Answer 10

LA;
thus enlargement may cause
1) dysphagia (esophagus)
2) hoarseness (left recurrent laryngeal)

Question 11

Transesophageal echo useful for

Answer 11

diagnosing

1) left atrial enlargement
2) aortic dissection
3) thoracic aortic aneurysm