Chondrodermatitis nodularis helicis is an inflammatory skin condition that affects the ear. It causes a painful bump to develop on the top rim or helix of the ear or the curved piece of cartilage just inside, known as the antihelix. The condition, abbreviated to CNH, is also known as Winkler disease.
Endoskeleton I think it's a little hard to read this question
The answer is isometric contraction. Isometric contractions generate force without changing the length of the muscle.
Hope this helps! :)
