Larynx
The larynx is a cartilaginous structure in the throat, also referred to as the voice box.
It is the part of the respiratory tract that contains the vocal cords to produce the sound of the human voice.
A framework of cartilage provides stability and attachment points for a number of muscles that control the position of the larynx especially when speaking.
The larynx also has a flap of tissue called the epiglottis that prevents food from going into the trachea when you eat or drink.
Learn the anatomy of the larynx with tutorials and quizzes using interactive animations and diagrams below.
Larynx: anatomy, location and function
An interactive demonstration of the Larynx featuring the iconic GBS illustrations. The cartilages, ligaments, membranes and muscles are labeled in various anatomical views.
Small Cartilages of the Larynx – Arytenoid, Corniculate, & Cuneiform Cartilages
The larynx includes several muscles, cartilages and ligaments. All help to provide support or regulate vocal ligaments.
The Epiglottis of the Larynx
The epiglottis projects obliquely from the top of the larynx. Muscles move the epiglottis to cover the larynx during swallowing to allow for the passage of food. As food clears the passageway, the muscles relax to reopen the respiratory passageway.
Thyroid and Cricoid Cartilages of the Larynx
The largest laryngeal cartilage is the thyroid cartilage. Inferior to the thyroid cartilage is the ring-shaped cricoid cartilage. Along with the epiglottis, they represent the large cartilages of the larynx.
Intrinsic Muscles of the Larynx
The intrinsic muscles move the arytenoid cartilages and adjust the tension applied to the vocal folds and ligaments. The intrinsic muscles originate and insert on the larynx.
Glottis – Structure & Function
The vocal folds and the space between the folds are referred to as the glottis. Laryngeal muscles adjust the size of the glottic opening. A broader opening allow for air to enter and leave the trachea. The muscles reduce the size of the opening to create voice sounds.
Vocal Cords (Vocal Folds) & Vestibular Folds of the Larynx
There are two pairs of soft tissue folds projecting into the lumen of the larynx. The inferior folds are the vocal folds and the superior folds are the vestibular folds.