Cardiovascular

Question 1

What are the walls of the atria and ventricles called ?

Answer 1

Myocardium

Question 2

Describe how the blood flows through the heart ..

Answer 2

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.

Question 3

Which side of the heart pumps blood around the body?

Answer 3

Left

Question 4

Describe the two phases of the cardiac cycle

Answer 4

Diastole = relaxation phase - ventricles relax and fill with blood
Systole = contraction phase - ventricles contract and pump blood out of heart