What is the primary function of red blood cells?

The primary function of red blood cells, also known as erythrocytes, is to transport oxygen from the lungs to the tissues throughout the body. They achieve this through a protein called hemoglobin, which binds to oxygen molecules. Each red blood cell contains a significant amount of hemoglobin, allowing it to carry a substantial volume of oxygen relative to its size. This oxygen delivery is crucial for cellular respiration, providing the energy needed for various cellular processes.

In addition to oxygen transport, red blood cells also aid in carrying a small amount of carbon dioxide, a waste product of metabolism, back to the lungs for exhalation. This dual role is essential for maintaining proper gas exchange and metabolic function in the body. Understanding the primary role of red blood cells in oxygen transport is fundamental for veterinary technicians, as it can influence patient care and treatment plans for various conditions related to blood and respiration.