Red blood cells (RBC); no nucleus, contain hemoglobin which carries oxygen.

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Prepare for the ECPI Anatomy and Physiology AandP Exam 1. Utilize multiple choice questions and flashcards with detailed explanations. Enhance your knowledge and be exam-ready!

Multiple Choice

Red blood cells (RBC); no nucleus, contain hemoglobin which carries oxygen.

Explanation:
RBCs are erythrocytes, cells specialized for transporting oxygen. In their mature form they have no nucleus, which frees up space for hemoglobin—the protein that binds oxygen and carries it from the lungs to tissues (forming oxyhemoglobin when oxygen is bound). Their biconcave shape increases surface area for gas exchange and helps them navigate tiny capillaries. Platelets are small fragments involved in clotting, while lymphocytes and monocytes are white blood cells with nuclei that participate in immune responses. So the description matches erythrocytes.

RBCs are erythrocytes, cells specialized for transporting oxygen. In their mature form they have no nucleus, which frees up space for hemoglobin—the protein that binds oxygen and carries it from the lungs to tissues (forming oxyhemoglobin when oxygen is bound). Their biconcave shape increases surface area for gas exchange and helps them navigate tiny capillaries. Platelets are small fragments involved in clotting, while lymphocytes and monocytes are white blood cells with nuclei that participate in immune responses. So the description matches erythrocytes.

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