Which statement defines Transportation of Oxygen?

Which statement defines Transportation of Oxygen?

• A. The diffusion of oxygen in the muscle tissue
• B. The capability of the lungs to diffuse oxygen into the blood
• C. The ability to deliver oxygen to the muscle cells
• D. The diffusion of oxygen from the blood to the muscle cells

Answer: (C)

Transportation of Oxygen refers to moving oxygen through the body from the lungs to the tissues via the bloodstream. It’s about loading oxygen in the lungs, circulating it in the blood (primarily bound to hemoglobin), and delivering it to where it’s needed, such as the working muscles. The best statement captures this delivery role to the muscle cells, reflecting the circulatory system’s job in getting O2 from the lungs to the tissues that require it. The other ideas describe diffusion steps rather than the movement of oxygen through the bloodstream: diffusion into the muscle tissue is about how oxygen moves from blood into cells at the tissues; diffusion from the lungs into the blood is gas exchange at the lungs; diffusion from blood to muscle cells is the transfer into cells, which occurs after transport has moved the oxygen to the tissues.

Transportation of Oxygen refers to moving oxygen through the body from the lungs to the tissues via the bloodstream. It’s about loading oxygen in the lungs, circulating it in the blood (primarily bound to hemoglobin), and delivering it to where it’s needed, such as the working muscles. The best statement captures this delivery role to the muscle cells, reflecting the circulatory system’s job in getting O2 from the lungs to the tissues that require it.

The other ideas describe diffusion steps rather than the movement of oxygen through the bloodstream: diffusion into the muscle tissue is about how oxygen moves from blood into cells at the tissues; diffusion from the lungs into the blood is gas exchange at the lungs; diffusion from blood to muscle cells is the transfer into cells, which occurs after transport has moved the oxygen to the tissues.