Final answer:
The dermis is the layer of skin beneath the epidermis, composed of the papillary and reticular layers. Healing time for the dermis varies, but can range from a few days to several weeks. Dermal appendages are structures associated with the dermis, such as hair, nails, sweat glands, and sebaceous glands.
Step-by-step explanation:
The dermis is the layer of skin located below the epidermis. It is made up of two layers: the papillary layer and the reticular layer. The papillary layer is the upper layer, composed of loose connective tissue and containing papillae that extend into the epidermis. The reticular layer is the lower layer, made of dense connective tissue.
Normal healing time for the dermis can vary depending on the type and severity of the injury. It can range from a few days to several weeks. The healing process involves inflammation, new tissue formation, and remodeling of the skin.
Dermal appendages are structures that originate from the dermis and are associated with the skin. These include hair, nails, sweat glands, and sebaceous glands. They serve various functions such as regulating body temperature, protecting the skin, and providing sensory perception.