Tubes that carry air form trachea to lungs?

The tubes that carry air from the trachea to the lungs are called bronchi. The trachea, also known as the windpipe, is a tube that connects the larynx (voice box) to the lungs. It is made up of cartilage rings that keep the airway open. The bronchi are the two large branches that branch off from the trachea and enter the lungs. Each bronchus then divides into smaller and smaller branches called bronchioles, which end in tiny sacs called alveoli. The alveoli are where gas exchange occurs, with oxygen from the air being taken up by the bloodstream and carbon dioxide from the bloodstream being released into the air.