Which of the following are functions of white blood cells? Select all that apply
1. Phagocytosis
2. Aid in immunity
3. Clumping to decrease bleeding
4. Combat infection
5. Carrying oxygen
1, 2, 4
Rationale:
1. Phagocytosis is a function of neutrophils (white blood cells).
2. Lymphocytes (white blood cells) are responsible for humoral and cellular immunity.
3. Platelets form hemostatic plugs to stop bleeding.
4. White blood cells are the mobile protective units in the body.
5. Hemoglobin in the red blood cells carries oxygen.
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