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.
Overview of Respiratory Tract Histology. The lung is one of several organs that packs a large epithelial surface area into a compact volume. The basic organizational pattern is that of a gland, in which a branching tree of tubes provides continuity from the body's outside surface to a vast number of epithelial cells.