Laryngeal prominence

The Adam's apple or laryngeal prominence is the lump or protrusion in the human neck formed by the angle of the thyroid cartilage surrounding the larynx seen especially in males.

The topographic structure which is externally visible and colloquially called the "Adam's apple" is caused by an anatomical structure of the thyroid cartilage called the laryngeal prominence or laryngeal protuberance protruding and forming a "bump" under the skin at the front of the throat.

All human beings with a normal anatomy have a laryngeal protuberance of the thyroid cartilage.

This prominence is typically larger and more externally noticeable in adult males. There are two reasons for this phenomenon.

Firstly, the structural size of the thyroid cartilage in males tends to increase during puberty, and the laryngeal protuberance becomes more anteriorally-focused.

Secondly, the larynx, which the thyroid cartilage partially envelops, increases in size in male subjects during adolescence, moving the thyroid cartilage and its laryngeal protuberance towards the front of the neck.

The adolescent development of both the larynx and the thyroid cartilage in males occur as a result of hormonal changes, especially the normal increase in testosterone production in adolescent males.

In females, the laryngeal protuberance sits on the upper edge of the thyroid cartilage, and the larynx tends to be smaller in size, and so the "bump" caused by protrusion of the laryngeal protuberance is much less visible or not discernible.