The choice to make PE determinations rests with each individual hospital (not with the state) and. is not dependent on whether the hospital (or the state) operates PE for other populations.
Relevance. Rating Newest Oldest. Best Answer: Trachea is the respiratory system supported by a rings of cartilage.. in animal, CO2 is considered as the gas released by the body cell and need to be exhaled out from the respitary system just like the human.. Source(s): Lollipop_mun Â· 8 years ago.
The trachea is the largest tube in the respiratory tract and consists of tracheal rings of hyaline cartilage. It branches off into two bronchial tubes, a left and a right main bronchus. The bronchi branch off into smaller sections inside the lungs, called bronchioles.