Only dermis is vascularized. Nutrients reach epidermis by diffusing through the tissue from the blood vessels. Underneath dermis is hypodermis (superficial fascia), also called subcutaneous tissue which is composed of loose connective tissue (mostly areolar and adipose).
A collagen dressing is a type of wound dressing that is made with a form of collagen to aid in the body's healing processes. Collagen is a category of structural proteins that are naturally present in almost every part of the human body and are especially common in connective tissue.
colÂ·laÂ·gen. The tough, fibrous protein found in bone, cartilage, skin, and other connective tissue. Collagen provides these body structures with the ability to withstand forces that stretch or lengthen them.here is a lack of standardization with these markers, and they may be affected by other conditions and medication, but the International Osteoporosis Foundation endorses serum C-terminal telopeptide of type 1 collagen and serum. type 1 N-terminal propeptide.