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Multiple Choice
Which of the following is the primary function of red blood cells?
A
Regulating body temperature
B
Clotting blood to prevent excessive bleeding
C
Producing antibodies to fight infections
D
Transporting oxygen from the lungs to the body's tissues
Verified step by step guidance
1
Understand the role of red blood cells (RBCs) in the circulatory system. They are primarily responsible for transporting oxygen from the lungs to the tissues throughout the body.
Recognize that red blood cells contain hemoglobin, a protein that binds oxygen molecules. This is crucial for their function in oxygen transport.
Consider the options provided: regulating body temperature, clotting blood, producing antibodies, and transporting oxygen. Identify which function aligns with the known role of RBCs.
Eliminate options that do not match the primary function of RBCs. For example, regulating body temperature is a function of the circulatory system as a whole, not specifically RBCs.
Conclude that the primary function of red blood cells is to transport oxygen from the lungs to the body's tissues, as this is directly related to their structure and composition.