1. Oxygenated blood is distributed throughout the heart muscle through the process known as coronary circulation. The coronary circulation has how many main arteries? a. Two   c. Four b. Six     d....

1. Oxygenated blood is distributed throughout the heart muscle through the process known as coronary circulation. The coronary circulation has how many main arteries?

a. Two   c. Four

b. Six     d. Eight

2. Starling’s law may be expressed as follows:

a. An increase in systolic filling does not alter cardiac output.

b. A decrease in systolic filling will decrease the force of contraction.

c. An increase in diastolic filling will increase the force of contraction.

d. An increase in filling time yields greater cardiac output regardless of peripheral resistance.