Aponeuroses (plural of
aponeurosis: απο, "away" or "of", and νευρον, "sinew", and pronounced ap·o·neu·ro·sis) are layers of flat broad tendons. They have a shiny, whitish-silvery color, are
histologically similar to
tendons, and are very sparingly supplied with
blood vessels and
nerves. When dissected, aponeuroses are papery and peel off by sections. The primary regions with thick aponeurosis are in the
ventral abdominal region, the dorsal
lumbar region, the ventriculus in birds, and the palmar and plantar regions.