larynx membranes and cavities

thyrohyoid membrane

connects the thyroid cartilage to the hyoid bone, suspending the larynx from the hyoid bone

cricothyroid ligament

connects the cricoid cartilage to the thyroid cartilage. It forms the main part of the vocal folds inferiorly and is involved in regulating vocal cord tension

quadrangular membrane

extends from the arytenoid cartilages to the epiglottis. Inferior border forms the vestibular folds that help protect the air way

vocal ligament

extends from the arytenoid cartilage to the thyroid cartilage. It forms the core of the true vocal folds, which are critical for phonation

laryngeal inlet

superior opening of larynx that serves as an entrance to the laryngeal cavity from the pharynx

vestibule

space superior to vestibular folds

ventricle

narrow space between vestibular folds and vocal folds

infraglottic cavity

space inferior to the vocal folds and becomes continuous with the lumen of the trachea