Question

Lymphatic/Immune system

Which of the following does not occur during the inflammatory response?

            A) Macrophages recruit white blood cells to the site.

            B) Mast cells release histamine to cause capillary leakage and infiltration of phagocytes to the site.

            C) There is decreased capillary permeability and blood flow to the site.

            D) Increased numbers of phagocytic cells are attracted to the site.

Answer 1

Inflammation is a highly coordinated biological response of the immune system that is triggered by certain factors like tissue injury. The inflammation process involves below events:

1. Vasodilation: More blood flows to the site of inflammation causing redness

2. Vascular permeability: Endothelial cells become leaky and causing swelling due to accumulation of fluid

3. The release of specific factors by epithelial and endothelial cells of damaged tissue that recruit neutrophils and monocytes with the help of macrophages

4. Histamine is released by the mast cells that causes capillary leakage and infiltration of phagocytes to the site.

Therefore, based on the above information, the correct option is C) There is decreased capillary permeability and blood flow to the site.