What is the trachea made out of to make it almost non-collapsible?

Asked by arwen46 12 years ago 4/11/2013 1:01 AM

Last updated by anonymous 12 years ago 4/12/2013 9:15 PM

Answered by Dr. John Carmen 12 years ago 4/12/2013 9:15 PM

The trachea is made out of cartilage rings that make it almost non-collapsible.