cardio 265

Question 1

Left main coronary artery

Answer 1

Apex of the heart

Question 2

Left circumflex coronary artery(LCX)

Answer 2

supplies lateral and posterior walls of left ventricle, anterolateral papillary muscles

Question 3

Left Anterior descending artery(LAD)

Answer 3

supplies anterior of interventricular septum, anterolateral papillary muscle, and anterior surface of left ventricle..
coronary artery occlusion most commonly occurs

Question 4

Posterior descending interventricular artery(PDA)

Answer 4

supplies posterior 1/3 of interventricular septum, posterior walls of ventricles, and posteromedial papillary muscle

Question 5

Right(acute) marginal artery

Answer 5

supplies right ventricles

Question 6

SA and AV nodes

Answer 6

are usually supplied by RCA.

infarct may cause nodal dysfunction( bradycardia or heart block)

Question 7

Left trium

Answer 7

most posterior part of the heart, enlargement can cause dysphagia( due to compression of the esophagus) or hoarseness ( due to compression of the left recurrent laryngeal nerve, a branch of the vagus).

Question 8

Pericardium consist of 3 layers(from outer to inner)

Answer 8

fibrous pericardium
parietal laters of serous pericardium
visceral layer of serous pericardium
Pericardium cavity lies between parietal and visceral layers