PATHOLOGY

Detailed explanation-1: -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-2: -When inflammation happens, chemicals from your body’s white blood cells enter your blood or tissues to protect your body from invaders. This raises the blood flow to the area of injury or infection. It can cause redness and warmth. Some of the chemicals cause fluid to leak into your tissues, resulting in swelling.

Detailed explanation-3: -The swelling process, also known as edema, is the result of acute inflammation, a response triggered by damage to living tissues. In the case of injury, the purpose of the inflammatory response is to remove components of damaged tissue in order to allow the body to begin to heal.