Which cell type is primarily involved in engulfing bacteria during acute injury healing?

Which cell type is primarily involved in engulfing bacteria during acute injury healing?

• A. Leukocytes
• B. Erythrocytes
• C. Platelets
• D. Neurons

Answer: (A)

Engulfing invading bacteria during the early phase of healing is carried out by leukocytes, the white blood cells. In acute inflammation, neutrophils—a type of leukocyte—are the first responders to the injury. They migrate to the site, recognize bacteria, and perform phagocytosis, meaning they wrap their membranes around the bacteria to ingest and digest them with enzymes. This rapid cleanup helps prevent infection and sets the stage for tissue repair. Erythrocytes (red blood cells) just carry oxygen, platelets focus on clotting and sealing wounds, and neurons are nerve cells not involved in fighting infection. So the leukocytes are the primary players, with neutrophils at the forefront of the initial phagocytic response.

Engulfing invading bacteria during the early phase of healing is carried out by leukocytes, the white blood cells. In acute inflammation, neutrophils—a type of leukocyte—are the first responders to the injury. They migrate to the site, recognize bacteria, and perform phagocytosis, meaning they wrap their membranes around the bacteria to ingest and digest them with enzymes. This rapid cleanup helps prevent infection and sets the stage for tissue repair. Erythrocytes (red blood cells) just carry oxygen, platelets focus on clotting and sealing wounds, and neurons are nerve cells not involved in fighting infection. So the leukocytes are the primary players, with neutrophils at the forefront of the initial phagocytic response.