👉 Epithesis is a type of connective tissue that forms the outermost layer of the skin and helps to seal off the openings between cells. It's also called the "skin lining," as it covers the entire surface of the skin, including the top layer of hair follicles and under the nails. Epithelial cells (such as melanocytes in the skin) are responsible for producing and secreting proteins that help protect and repair wounds.