Dead cells that form over a wound as it heals; an accumulation of sebum and pus.

Dead cells that form over a wound as it heals; an accumulation of sebum and pus.

• A. Crust
• B. Pustule
• C. Papule
• D. Dermoplasty

Answer: (A)

A crust is the dried exudate that forms on the skin surface as a wound heals. It consists of dried serum, blood, and cellular debris, and can include pus or sebum from the wound area. This dried layer covers the wound as healing progresses, which matches the description of dead cells and material forming over a wound during healing. A pustule is a small raised patch filled with pus, not a dried crust on the surface. A papule is a small, solid raised bump, not a crust. Dermoplasty refers to a skin grafting procedure, not a lesion formed over a healing wound.

A crust is the dried exudate that forms on the skin surface as a wound heals. It consists of dried serum, blood, and cellular debris, and can include pus or sebum from the wound area. This dried layer covers the wound as healing progresses, which matches the description of dead cells and material forming over a wound during healing.

A pustule is a small raised patch filled with pus, not a dried crust on the surface. A papule is a small, solid raised bump, not a crust. Dermoplasty refers to a skin grafting procedure, not a lesion formed over a healing wound.