Want this question answered?
Oxygen enters the blood in the alveoli of the lungs
Blood entering the left ventricle is rich in oxygen. In contrast, oxygen-poor blood enters the right ventricle.
Oxygen enters the blood in the alveoli of the lungs
Oxygen enters the pulmonary blood in the capillaries of the alveoli -- the air sacs of the lungs.
Oxygen-poor blood enters the heart through the right atrium
blood oxygen
Oxygen
the lungs
Oxygen
blood
When blood that is rich in oxygen re enters the heart, the blood enters through the pulmonary valve. The pulmonary valve brings the oxygen rich blood to the pulmonary trunk of the pulmonary artery.
oxygen enters the blood and carbon dioxide