The only externally visible part of the respiratory system

The two narrower tubes branching from the trachea that leads into the lungs

A chamber behind the nose and mouth that leads to the trachea and is part of the digestive system and respiratory system.

The large muscle that contracts and relaxes and moves air in and out of the lungs.

An air tube that is held open by C-shaped rings of cartilage. Also known as the windpipe.

The flap of tissue at the bottom of the pharynx which keeps food and liquids out of the rest of your respiratory system.

The air tubes in your lungs branch off into smaller, narrower tubes called

Tiny hairlike structures that line your nose and most other airways of the respiratory system.

The main organs of the respiratory system