The gas that blood carries from muscles to the brain is carbon dioxide (CO2). When muscles perform work, they produce CO2 as a byproduct of metabolism. This CO2 is transported in the bloodstream to the lungs for exhalation, while also playing a role in regulating blood pH and stimulating breathing. Additionally, oxygen (O2) is carried from the lungs to the muscles for energy production.
Pulmonary Circulation carries deoxygenated blood to the lungs to receive oxygen, while the Systemic Circulation carries the oxygenated blood throughout the body so the oxygen can be used, returning to the Pulmonary Circulation as deoxygenated blood.
Carbon dioxide
The pulmonary artery is the main artery that carries blood to your lungs.
Veins, Arteries (Capillaries are also blood vessels, but the main job is gas exchange).
The blood carries oxygen to all the cells of the body.
The capillary is the smallest of the blood vessels. It is the site of gas exchange between the blood and the tissues.
Capillaries are the smallest of the blood vessels. Their thin walls and small size facilitate gas exchange with the body tissues.
Capillaries are the very small tubes that carry blood. They are the site of gas exchange in the body.
Hemoglobin, a protein found in red blood cells, carries oxygen in gas transport. Oxygen molecules bind to the iron present in hemoglobin, allowing red blood cells to transport oxygen from the lungs to the rest of the body.
When you breathe, the air that goes in your lungs gets absorbed through the thin tissue that your lungs are made up of. This oxygen is transmitted to the heart, which pumps blood all around the vascular system. Blood carries the oxygen and releases it wherever the oxygen is needed.
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oxygen rich blood gets pumped out of your heart to your arteries which carries the blood to your muscles. then your muscles use the oxygen. oxygen poor blood goes into your veins to go back into your heart. then it goes through a cycle that takes your blood to your lungs, to get oxygen. this process is repeated.