The thyroid cartilage is the largest of the nine cartilages that make up the laryngeal skeleton, the cartilage structure in and around the tracheathat contains the larynx.
It is composed of two plate-like laminae that fuse on the anterior side of the cartilage to form a peak, called the laryngeal prominence. This prominence is often referred to as the "pomus Adami" or "Adam's apple".
The laryngeal prominence is more prominent in adult male than female because of the difference in the size of the angle: 90° in male and 120° in female.
Everyone has an Adam’s Apple. The Adam's Apple is thyroid carage that acts as a shield for the larynx. It is more prominent in men because men commonly have a larger larynx.
So next time you get to sport a hot girl around the club with a big Adam’s apple don’t be afraid, it only means she has a long larynx!
<a data-cke-saved-href="http://en.wikipedia.org/wiki/Adam" href="http://en.wikipedia.org/wiki/Adam" s_apple#sexual_characteristic'="" target="_new">(Source)

