MICROANATOMY

Detailed explanation-1: -Fourth degree burns extend into fat, fifth degree burns into muscle, and sixth degree burns to bone.

Detailed explanation-2: -Fifth-degree burn injuries occur when all the skin and subcutaneous tissues are destroyed, exposing muscle. These burns can be fatal due to damage to major arteries and veins. Fifth-degree burn injuries also may require amputation due to damage to muscles. If amputation is not needed, skin grafting will be required.

Detailed explanation-3: -These burns always require surgery or grafting to close the wounds. Fourth degree burns often result in permanent disability and may require lengthy rehabilitation. Fourth degree burns can be life-threatening and may require amputation due to the severe nature of fourth degree burn injuries.