What are the components of blood responsible for oxygen transport?

Erythrocytes, commonly known as red blood cells, are the components of blood responsible for the transport of oxygen throughout the body. They contain hemoglobin, a protein that binds to oxygen in the lungs and carries it to tissues and organs. As blood circulates, erythrocytes release the oxygen to be utilized by cells for cellular respiration, a critical process that produces energy for the body.

Leukocytes, or white blood cells, play a key role in the immune system by defending the body against infections, while platelets are involved in blood clotting to prevent bleeding. Antigens are substances that can induce an immune response and are not directly involved in the transportation of oxygen. Hence, erythrocytes stand out as the specialized cells specifically designed for the vital function of oxygen transport in the circulatory system.