hypodermis
the hypodermis
contusion
frostbite
frostbite
frostbite
frostbite
frostbite
Closed wound- An injury to underlying tissues without a break in the skin or mucous membrane
Cellulitis
determined not by how cold the skin and the underlying tissues become but by how long they remain frozen
The epithelium is not a system it is the top layer of the skin which is the largest organ in the body. The skin is not a system either. But it does protect the underlying tissues.
Frostbite does. In severe cases it can cause the tissue and bone to fall off.