Cardiac Circulation

Question 1

Function and composition

Answer 1

• nourish the heart with blood

- coronary arteries, coronary veins, and coronary sinus

Question 2

Coronary arteries

Answer 2

-branch off to left and right from the ascending aorta, and encircles the heart
-compress when ventricles contract, and fill during diastole
(Inadequate blood supply if the heart is beating too fast)

Question 3

Coronary veins

Answer 3

• drains myocardium

- coronary veins them empty into the coronary sinus, which empty into the R atrium