Which component of blood is primarily involved in the transportation of oxygen?

The primary component of blood involved in the transportation of oxygen is red blood cells. These specialized cells contain hemoglobin, a protein that binds to oxygen in the lungs and transports it to tissues throughout the body. Hemoglobin has a high affinity for oxygen, allowing red blood cells to efficiently carry and release oxygen where it is needed.

In contrast, plasma serves mainly as the liquid medium that transports nutrients, hormones, and waste products, but it does not play a direct role in oxygen transport. White blood cells are part of the immune system and are responsible for defending against pathogens, while platelets are crucial for blood clotting and wound healing. Therefore, red blood cells are uniquely adapted to fulfill the essential function of oxygen transport in the circulatory system.