Question

oxygenated blood flows from lungs to heart by​

Answer 1

Answer:

Veins is the correct answer

Answer 2

Explanation:

Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body.