The ear canal, also called the external auditory meatus, is the other important outer ear landmark. This part of the ear is lined with only a few layers of skin and fine hair, with many veins traveling all around it. This means that there is an abundant flow of blood to the ear canal. Earwax (cerumen) accumulates in the ear canal and serves as a protective barrier to the skin from bacteria and moisture. Earwax is normal, unless it completely blocks the ear canal.