Adam's (or Anne's) Apple

The laryngeal prominence is actually the region where the two lamina of the thyroid cartilage meet at 90º. It creates a visible Adam's apple. While most people consider it a sexually dimorphic trait, both sexes actually have one, and many man have a small Adam's apple, while many woman have a prominent one, including the one above. There is a surgery available for these woman, and it is also often used during sex changes. The role of that extra cartilage is unclear, and the differences between the sexes seem to stem from the angle at which the plates connect, since it is 120º in the females. It does not contribute to the pitch of the voice and its function appears to be mostly protective, especially from karate chops.