PATHOLOGY

Detailed explanation-1: -Neutrophils are key mediators of the inflammatory response, and program antigen presenting cells to activate T cells and release localized factors to attract monocytes and dendritic cells [7].

Detailed explanation-2: -Redness is caused by the dilation of small blood vessels in the area of injury. Heat results from increased blood flow through the area and is experienced only in peripheral parts of the body such as the skin.

Detailed explanation-3: -The body always responds to an injury with a predictable inflammatory response, as the first step towards healing. Redness, heat, swelling and pain are associated with this first stage. Redness and heat are caused by increased blood flow.

Detailed explanation-4: -What are the steps of inflammatory response? The four steps of the inflammatory response recognize the damaged tissue, recruitment of inflammatory cells, removal of extraneous objects, and repair the damaged tissue.