What are red blood cells also known as?

Red blood cells are known as erythrocytes. This term is derived from the Greek words "erythros," meaning red, and "kytos," meaning cell. Erythrocytes are crucial for carrying oxygen from the lungs to the body's tissues and transporting carbon dioxide back to the lungs for exhalation.

In the context of the other options provided, leucocytes are white blood cells involved in the immune response, thrombocytes refer to platelets which are necessary for blood clotting, and platelets themselves are small cell fragments that play a vital role in wound healing and stopping bleeding. Understanding the correct terminology for different types of cells in the blood is essential for fields like esthetics, where knowledge of skin health, circulation, and overall wellness is important.