Cardiovascular System Blood Flow

Question 1

Blood Flow Step 1

Answer 1

From the right atrium, oxygen-poor blood from all tissues except the lungs flows through the tricuspid valve to the right ventricle

Question 2

Blood Flow Step 2

Answer 2

Right ventricle pumps oxygen-poor blood through the pulmonary semilunar valve, into the pulmonary artery, which carries it to the lungs

Question 3

Blood Flow Step 3

Answer 3

Left atrium receives oxygen-rich blood from the lungs through the pulmonary veins, blood flows out of the LA, through the mitral valve and into the left ventricle

Question 4

Blood Flow Step 4

Answer 4

Left ventricle receives oxygen-rich blood from the left atrium, blood flows out of the LV through the aortic semilunar valve and into the aorta, which carries it to all parts of the body, except the lungs

Question 5

Blood Flow Step 5

Answer 5

Oxygen-poor blood is returned by the venae cavae to the right atrium and the cycle continues