<unk> s are physical films, fabrics, gels or other materials that are applied between layers of tissues at the end of a surgery before the incision site is closed. While in place, the<unk>  acts as a physical<unk>  to separate traumatized tissue surfaces so that they do not adhere to one another while the tissue surfaces heal. Once the tissue surfaces heal, which is usually between 3 and 7 days, the<unk>  dissolves and is absorbed by the body.
Adhesion barrier
Coagulation
Muscular defense
Neurosecretion
Antigen presentation
Hemostasis
Immune cycle
Excretion