Final answer:
The opening which connects the trachea to the anterior neck is called the larynx. It is a cartilaginous structure that helps regulate airflow into and out of the lungs.
Step-by-step explanation:
The opening which connects the trachea to the anterior neck is called the larynx. The larynx is a cartilaginous structure that helps regulate the volume of air that enters and leaves the lungs. It is formed by several pieces of cartilage, including the thyroid cartilage, epiglottis, and cricoid cartilage.