The helix rings the uppermost portion of the |ear| and forms the rim of the outer |ear|. The inner curved prominence that lies parallel to the helix is the antihelix. It also borders the back and top of the |concha|. The helix and antihelix are composed of ~cartilage~. The outer |ear| is composed of a single piece of ~cartilage~, with the exception of the |lobule|.
