Canadian Health Information Management Association Exam 2025 – 400 Free Practice Questions to Pass the Exam

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What is the primary function of red blood cells?

To fight infection.

To transport oxygen.

The primary function of red blood cells is to transport oxygen throughout the body. They achieve this through the presence of hemoglobin, a complex iron-containing protein that binds to oxygen in the lungs and releases it in the tissues where it is needed. This oxygen transport is vital for cellular respiration, a process through which cells generate energy.

While other options mention functions that are important to overall health, they do not pertain to the primary role of red blood cells. For instance, fighting infection is primarily the role of white blood cells, while hormone production mainly occurs in glands of the endocrine system. The regulation of body temperature is primarily managed through physiological mechanisms involving the skin and various bodily systems, rather than the function of red blood cells. Thus, the emphasis on oxygen transport clarifies the essential responsibility of red blood cells in maintaining bodily functions.

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To produce hormones.

To regulate body temperature.

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