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    Question

    Which of the following statements is accurate regarding the functions of human blood components?

    A Red blood cells (RBCs) transport oxygen from the rest of the body to the lungs. Correct Answer Incorrect Answer
    B White blood cells (WBCs) are responsible for clotting the blood. Correct Answer Incorrect Answer
    C Platelets are involved in fighting infections. Correct Answer Incorrect Answer
    D A small amount of oxygen is dissolved in plasma water. Correct Answer Incorrect Answer

    Solution

    Red blood cells are primarily responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide back to the lungs for exhalation. White blood cells play a crucial role in the immune system by fighting off infections and foreign bodies. Platelets, on the other hand, are essential for blood clotting, not for fighting infections. Lastly, while the majority of oxygen transport occurs via hemoglobin in the red blood cells, a small amount of oxygen does indeed dissolve directly into the plasma, aiding in minor transport.

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