What is the primary function of red blood cells (RBCs)?

Prepare for the AAB Medical Technologist Test with engaging flashcards and multiple choice questions. Each question includes explanations to enhance your understanding. Ace your exam on the first attempt!

The primary function of red blood cells (RBCs) is to transport oxygen from the lungs to the tissues and organs throughout the body and carry carbon dioxide back to the lungs for exhalation. This critical role is facilitated by hemoglobin, a protein within RBCs that binds to oxygen and carbon dioxide. The efficient exchange of these gases is vital for cellular respiration, energy production, and maintaining acid-base balance in the body.

Other functions listed, such as regulating body temperature, producing hormones, or preventing infections, are handled by different systems or components of the body. For example, the body maintains temperature through various physiological mechanisms primarily involving blood flow and perspiration, while hormone production is mainly a function of endocrine glands. Infection prevention is primarily the role of white blood cells and the immune system. Hence, the clear and essential role of RBCs in gas transport distinctly identifies it as their primary function.

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