Which term best describes red blood cells?

Which term best describes red blood cells?

• A. Erythrocyte
• B. Leukocyte
• C. Platelet
• D. Lymphocyte

Answer: (A)

Red blood cells are called erythrocytes. This term names the cells whose primary job is to carry oxygen from the lungs to tissues throughout the body using hemoglobin. They’re distinct from leukocytes (white blood cells involved in immune defense), platelets (which help blood clotting), and lymphocytes (a type of white blood cell). Erythrocytes are typically small, biconcave discs that, in humans, lack a nucleus when mature, maximizing surface area for gas exchange. They develop in the bone marrow through erythropoiesis and are regulated by erythropoietin, with a lifespan of about 120 days.

Red blood cells are called erythrocytes. This term names the cells whose primary job is to carry oxygen from the lungs to tissues throughout the body using hemoglobin. They’re distinct from leukocytes (white blood cells involved in immune defense), platelets (which help blood clotting), and lymphocytes (a type of white blood cell). Erythrocytes are typically small, biconcave discs that, in humans, lack a nucleus when mature, maximizing surface area for gas exchange. They develop in the bone marrow through erythropoiesis and are regulated by erythropoietin, with a lifespan of about 120 days.