What is an injury to the tissues under the skin that causes blood vessels to rupture (bruise)?

• A. Contusion
• B. Exudate
• C. Fibroblast
• D. Furuncle

Answer: (A)

A bruise is called contusion. It happens when trauma damages small blood vessels just beneath the skin, causing blood to leak into the surrounding tissues without the skin breaking. That leakage creates the visible discoloration as the body reabsorbs the blood, often changing colors from red or blue to greenish and yellow as healing occurs. Exudate is fluid that oozes from vessels during inflammation and is not a subcutaneous blood collection. A fibroblast is a cell that builds connective tissue during healing, not a bruise. A furuncle is a boil caused by an infection of a hair follicle, not a collection of blood under the skin.