Rib healing: No real good studies on rib fractures. They can hurt for weeks or longer depending on how bad the fractures are. Usually walking around is good.
Subcutaneous tissue. The subcutaneous tissue, also called the subcutis, hypodermis, hypoderm, subcutis, or superficial fascia, is the lowermost layer of the integumentary system in vertebrates.
It has two layers, which are Papillary Layer, and Reticular Layer. 3. Subcutaneous Tissue is the third, but not actually part of the skin. It is Loose Connective Tissue that attaches the dermis to underlying structures.