Anatomy & Physiology Question #20


Which are traits or characteristics of a macrophage?


  1. Chemotaxis, Skin
    • Rationale:
  2. Produce antibodies, moderate immunity
    • Rationale:
  3. Diapedesis, Adhesion, Skin
    • Rationale:
  4. Adhesion, Chemotaxis
    • Rationale:



The correct answer is D. Fixed and free macrophages actively engulf pathogens and cell debris. Released histamine adhere (adhesion) and decreases capillary permeability and decreases blood flow through the area. Debris and bacteria are attacked by neutrophils drawn to the area by chemotaxis. There are multiple characteristics involved but this does not include skin, diapedesis, producing antibodies, or moderating immunity.

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