Dermis 6 July 2020 The layer of skin below the epidermis that is rich in blood vessels, nerve endings and many other structures necessary for all the various areas of the body. Related Articles: Glossary: Nail bedGlossary: Nail bed epitheliumMenopause and Brittle NailsWomen going through the menopause frequently report brittle nails...Glossary: CollagenWhat happens in the Proximal Nail Fold.