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.
In the trachea, or windpipe, there are tracheal rings, also known as tracheal cartilages. Cartilage is strong but flexible tissue.The tracheal cartilages help support the trachea while still allowing it to move and flex during breathing.n the trachea, or windpipe, there are tracheal rings, also known as tracheal cartilages. Cartilage is strong but flexible tissue.