Arkansas Esthetician Practice Exam 2026 - Free Esthetician Practice Questions and Study Guide

Red blood cells are known as erythrocytes. This term derives from the Greek words "erythros," meaning red, and "kytos," meaning cell. Erythrocytes play a critical role in the body by transporting oxygen from the lungs to tissues and facilitating the return of carbon dioxide from the tissues back to the lungs for exhalation.

Leucocytes, or white blood cells, are a different type of blood cell primarily involved in the immune response and do not have the same function as erythrocytes. The options related to biceps and veins are not relevant in this context, as biceps refer to a muscle group, and veins are blood vessels that carry blood towards the heart, rather than a type of blood cell.