The cricothyroid ligament is the larger part of the laryngeal membrane, continuing inferiorly as a median or anterior part and twin lateral ligaments. The median cricothyroid ligament is a flat band of white tissue joining the cricoid and thyroid cartilages, while the lateral cricothyroid ligament is also known as the cricothyroid membrane (also called conus elasticus). The lateral cricothyroid ligament is attached around the inside of the ring of cricoid cartilage and has a free margin that is attached to the arytenoid cartilages posteriorly and to the back of the thyroid cartilage anteriorly. The cricothyroid ligament is cut during emergency cricothyrotomy. This ligament's main purpose is to keep the cricoid and thyroid from traveling too far.