Trachea
The trachea (windpipe) begins immediately below the larynx (voice box) and runs down the center of the neck into the thoracic cavity where it branches into two bronchi that will enter the right and left lungs.
The trachea (windpipe) begins immediately below the larynx (voice box) and runs down the center of the neck into the thoracic cavity where it branches into two bronchi that will enter the right and left lungs.