Final answer:
Oxygen in muscle tissue is stored by myoglobin, not hemoglobin. Hemoglobin is responsible for the transport of oxygen in erythrocytes, with each molecule capable of carrying four oxygen molecules. Myoglobin acts as an oxygen reserve and is involved in aerobic respiration.
Step-by-step explanation:
The statement provided in the question contains inaccurate information. Oxygen storage in muscle tissue is not undertaken by hemoglobin in the cytoplasm of muscle cells, but rather by a different protein called myoglobin. Myoglobin has a high affinity for oxygen and is found in the muscle tissues of most mammals, acting as an oxygen reserve for aerobic respiration, particularly in cardiac muscle which relies almost entirely on aerobic metabolism.
Hemoglobin, on the other hand, is responsible for the transport of oxygen. It is a metalloprotein located in the erythrocytes (red blood cells) and is composed of four subunits with a heme group that each binds one molecule of oxygen. Therefore, one hemoglobin molecule can transport up to four molecules of oxygen from the lungs to other tissues of the body.
As oxygen diffuses from the alveoli into capillaries, it also diffuses into the red blood cells and binds to hemoglobin, forming oxyhemoglobin, which circulates in the blood and delivers oxygen to various tissues including the muscle.