What is another term for white blood cells?

White blood cells are also known as leukocytes. This term is derived from the Greek words "leukos," meaning white, and "kytos," meaning cell. Leukocytes play a critical role in the immune system by helping to defend the body against infections and foreign invaders. There are several types of leukocytes, each with specific functions, such as neutrophils, lymphocytes, and monocytes, all of which contribute to the body's ability to respond to threats.

Other terms provided, while related to blood, refer to different components. Plasma is the liquid portion of blood that carries cells, nutrients, and waste products. Platelets are small cell fragments involved in blood clotting. Erythrocytes refer to red blood cells, which are responsible for transporting oxygen throughout the body. Understanding these distinctions highlights the unique role that leukocytes play in the immune response.