throat:

1.  The anterior portion of the neck.
2. Anatomy. The portion of the digestive tract that lies between the rear of the mouth and the esophagus and includes the fauces and the pharynx.
3. A narrow passage or part suggestive of the human throat: the throat of a horn.
4. Botany. The opening of a tubular corolla or calyx where the tube joins the limb.

The region that includes the pharynx, the larynx, and related structures. Both the nasal passages and the oral cavity open into the pharynx, which also contains the openings of the Eustachian tubes from the ears. The lower portion of the pharynx leads into the esophagus and the trachea or windpipe. The rather funnel-shaped pharynx is suspended from the base of the skull and the jaws; it is surrounded by three constrictor muscles that function primarily in swallowing. See also Early modern humans; Pharynx.

The larynx, or voice box, is marked externally by the shield-shaped thyroid cartilage which forms the Adam’s apple. The larynx contains the vocal cords that act as sphincters for air regulation and permit phonation. The lower end of the larynx is continuous with the trachea, a tube composed of cartilaginous rings and supporting tissues. See also Larynx.

The term throat is also used in a general sense to denote the front (ventral side) of the neck.