Coronary Anatomy

Question 1

which two arteries are main source of blood, oxygen, and nutrients to myocardium?

Answer 1

The left and right coronary arteries. They originated in the root of the aorta.

Question 2

what does the left main coronary artery divided into?

Answer 2

Anterior descending coronary artery and circumflex artery

Question 3

what does the anterior descending artery supply?

Answer 3

anterior interventricular septum, left ventricle, and apex.

Question 4

what does the circumflex branch supply?

Answer 4

The lateral wall of left ventricle

Question 5

what does the right coronary artery supply?

Answer 5

right ventricle and posterior descending artery

Question 6

what does the posterior descending artery supply?

Answer 6

Posterior heart.

Question 7

what are the factors that regulate blood flow to the coronary arteries?

Answer 7

1. A artic pressure is the number one factor
2. heart rate
3. metabolic activity of heart
4. blood vessel tone
5. collateral circulation

Question 8

which vessels are most at risk for atherosclerosis?

Answer 8

1. Left anterior descending coronary artery
2. renal arteries
3. bifurcation of carotid arteries
4. branching of peripheral arteries.

Question 9

occlusion of the left anterior descending artery causes what type of MI?

Answer 9

anterior myocardial infarction

Question 10

what type MI would an occlusion of the left circumflex artery cause?

Answer 10

lateral MI

Question 11

what type of MI does and occlusion of the right coronary artery and posterior descending artery cause?

Answer 11

1. Right Ventricular
2. Right Inferior
3. Right Posterior
   Posterior