Actually, the exchange of oxygen for CO2 happens in the lungs. The heart pumps the blood through the system.
Veins.
The hero here is hemoglobin! Hemoglobin is on Red Blood Cells (RBCs). RBCs are one component of blood. Everytime your heart beats, it pushes oxygenated blood to all parts of your body.
Because the heart carries blood and oxygen to the tissues, and if the heart stopped, the tissues of the heart and other body parts would eventually die.
The aorta carries oxygen-rich blood from the heart to all parts of the body except to the lungs. Oxygen-poor blood is carried to the lungs from the heart through the pulmonary artery.
Veins and arteries are not classified by whether they carry oxygen-rich or oxygen-poor blood. They are classified according to whether they carry blood to the heart or away from the heart. Veins carry blood to the heart and arteries carry blood away from the heart. So the pulmonary vein carries blood to the heart, which is why it is a vein. Also, the pulmonary artery, which carries oxygen-poor blood to the lungs is an artery because it carries blood away from the heart.
Haemoglobin in the carry oxygen to all parts of the body in the form of oxyhaemoglobin.It leaves oxygen,carries carbon dioxide from the body cells forming carboxyhaemoglobin to carry the carbon dioxide to the lungs to be passed out through the nose.
heart
THE ANSWER IS ARTERY. Artery carries
Blood carries the oxygen and nutrients to all the parts of our bodies.
hemogloblin
hemoglobin
all parts of the body