Question

which statement correctly describes the inflammatory response process?
a. blood vessels dilate, swelling occurs, phagocytes ingest foreign bacteria or viruses
b. phagocytes enter the area, swelling occurs, enzymes are released to ingest foreign bacteria and viruses
c. acids are released, enzymes are released, phagocytes enter the area and ingest foreign bacteria and viruses
d. cells are destroyed and bacteria or viruses are ingested, blood vessels dilate, swelling occurs

Explanation:

When there is an injury or infection, blood vessels dilate (to allow more blood flow and immune - related substances to reach the area). This leads to swelling (due to increased fluid in the tissue). Then, phagocytes (like macrophages) move to the area and ingest foreign bacteria or viruses.

• Option B: The order is wrong. Swelling occurs after blood - vessel dilation, not before phagocytes enter.
• Option C: Acids are not a typical first - step in the basic inflammatory response process described.
• Option D: Phagocytes ingest bacteria or viruses after blood - vessel dilation and swelling, not before.

Answer:

A. Blood vessels dilate, swelling occurs, phagocytes ingest foreign bacteria or viruses