PATHOLOGY

Detailed explanation-1: -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-2: -Vasodilation: leads to greater blood flow to the area of inflammation, resulting in redness and heat. Vascular permeability: endothelial cells become “leaky” from either direct endothelial cell injury or via chemical mediators.

Detailed explanation-3: -The main symptoms of acute inflammation are swelling, redness, pain, loss of function, and heat. Three components to the basic acute inflammatory response occur every time: vasodilation, increased vascular permeability, and migration of leukocytes to the affected tissues.

Detailed explanation-4: -Vasodilation is what causes inflamed areas of the body to appear red or feel warm. Natural chemicals: The release of certain chemicals within the body can cause vasodilation. Examples include nitric oxide and carbon dioxide, as well as hormones such as histamine, acetylcholine, and prostaglandins.