ASCP (American Society for Clinical Pathology) Phlebotomy Technician Certification Practice Exam

Question: 1 / 400

Which of the following cells are NOT classified as leukocytes?

Neutrophils

Erythrocytes

Erythrocytes, commonly known as red blood cells, are not classified as leukocytes, which are the white blood cells involved in the immune response and defense against infection. While leukocytes encompass various types of cells, including neutrophils, monocytes, and lymphocytes, erythrocytes serve a different primary function: the transport of oxygen from the lungs to body tissues and the return of carbon dioxide from the tissues back to the lungs. This crucial role in gas exchange is what distinguishes erythrocytes from leukocytes, which are primarily responsible for identifying and eliminating pathogens. Therefore, the distinction lies in their functions and classifications within the blood cell hierarchy.

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Monocytes

Lymphocytes

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