Heart: Blood Supply

Question 1

The right and left coronary arteries arise from which of the great vessels?

Answer 1

The aorta just superior to the aortic valve

Question 2

What is the location of the coronary arteries in relationship to the layers of the heart?

Answer 2

Subepicardial (between the epicardium and myocardium)

Question 3

The right coronary artery gives off what branches?

Answer 3

1) Sinuatrial Nodal Artery
2) Right Marginal Artery
3) Posterior interventricular artery

Question 4

What is the condition when a coronary artery dives into the myocardium?

Answer 4

Myocardial Brdges

Question 5

Which of the coronary arteries is shorter?

Answer 5

Left

Question 6

Which branch of the left coronary artery lies within the anterior interventricular sulcus?

Answer 6

Anterior Interventricular artery

Question 7

Which branch of the left coronary artery will cross posterior to anastomose with the right coronary artery?

Answer 7

Circumflex Artery

Question 8

Which artery will branch off of the cricumflex artery?

Answer 8

Left Marginal Artery

Question 9

What does it mean when it is said that a coronary artery is dominant?

Answer 9

Which artery does the posterior interventricular artery branches from

Question 10

In what percent of the population is the right coronary artery dominant?

Answer 10

70%

Question 11

In right coronary dominance, what does the right coronary artery supply?

Answer 11

1) Right Atrium
2) Most of the right ventricle
3) Diaphragmatic surface of the left ventricle
4) Posterior 1/3 of the interventricular septum
5) Conduction system to the proximal parts of the right and left bundle branches

Question 12

In right coronary artery dominance, the left coronary artery supplies what?

Answer 12

1) Left Atrium
2) Most of the left ventricle
3) Part of the Right Ventricle
4) Anterior 2/3 of the interventricular septum

Question 13

What are typicllay considard to be the end arteries of the coronary arteries?

Answer 13

Branches of the coronary arteries

Question 14

Where do anastomoses occur between which arteries?

Answer 14

1) Right Coronary and circumflex arteries

2) Anterior and Posterior Interventricular Arteries

Question 15

What is the largest vein of the heart?

Answer 15

Coronary Sinus

Question 16

The coronary sinus lies where?

Answer 16

Within the coronary sinus

Question 17

The coronary sinus drains into what?

Answer 17

The Right Atrium

Question 18

What are the five tributaries of the coronary sinus?

Answer 18

1) Great Cardiac Vein
2) Middle Cardiac Vein
3) Small Cardiac Vein
4) Posterior Vein of the Left Ventricle
5) Oblique Vein of the Left Atrium

Question 19

The anterior vein of the right ventricle drains where?

Answer 19

Directly into the right atrium

Question 20

What are the smallest veins of the heart?

Answer 20

Venae Cordis Minimae

Question 21

What is the location of the venae cordis minimae?

Answer 21

Within the walls of the heart and drain primarily into the right atrium

Question 22

The great cardiac vein accompanies what other vessel as it drains the heart?

Answer 22

The anterior Interventricular Artery

Question 23

The middle cardiac vein accompanies which other vessel as it drains the heart?

Answer 23

The Posterior Interventricular Artery

Question 24

The small cardiac vein accompanies what arteries as it drains the heart?

Answer 24

The right coronary artery near the right lower margin of the heart

Question 25

What is the general location of the posterior vein of the left ventricle?

Answer 25

To the left of the middle cardiac vein

Question 26

What is the lymphatic drainage of the heart?

Answer 26

Subepicardial Lymphatic Plexus to the Tracheobronchial Node