Match each description with a structure in the key. a. pharynx b. glottis c. larynx d. trachea e. bronchi f. bronchioles Opening into larynx

Let's briefly describe the function of each structure. a. Pharynx: The pharynx is a tube-like structure that connects the mouth and nasal cavities to the esophagus and larynx. It serves as a passageway for both air and food. b. Glottis: The glottis is the opening between the vocal cords located in the larynx. It plays a crucial role in the production of speech and vocal sounds by controlling the passage of air through the larynx. c. Larynx: Also known as the voice box, the larynx is an organ in the neck involved in breathing, producing sound, and protecting the trachea against food aspiration. d. Trachea: The trachea, or windpipe, is a tube that connects the larynx to the bronchi, transporting air in and out of the lungs. e. Bronchi: The bronchi are the main air passages that branch off from the trachea into each lung. They continue dividing into smaller branches called bronchioles. f. Bronchioles: The bronchioles are thin, branching tubes that extend from the bronchi into the lung tissue. They carry air to the alveoli, where gas exchange occurs.

Now that we have understood the function of each structure, we can identify which one is the opening into the larynx. The glottis (b) is the structure that serves as the opening between the vocal cords located within the larynx and controls the passage of air through the larynx. Therefore, the opening into the larynx is the glottis.