Innominate, means no name, is a part of skeleton and an artery. The two innominate bones articulate along the midventral line to form the pelvic girdle. Each bone is composed of three fused bones the ileum, the pubis, and the ischium. The innominate artery is a large artery arising from the arch of the aorta and divides into the right subclavian artery and the right common carotid arteiy; supplies the right side of the neck and head and the right shoulder and arm.