Methylene chloride is used as a solvent in paint strippers, as a propellant in aerosols, in the manufacture of photographic film, and as a process solvent in the manufacturing of drugs. In the research laboratory it is commonly used for extractions. It is also used as a metal cleaning and finishing solvent.
Expert: JamesStone replied 5 years ago. The trachea is reinforced with cartilage rings in order to keep the airway open. These rings reinforce the anterior and lateral sides, but are actually C shaped as opposed to complete rings which allows the trachea to constrict somewhat when swallowing food. As regards XXXXX XXXXX anatomical reason why most men have deeper voices than boys or women, it relates largely to the size of the larynx.
The Trachea (also known as the wind pipe) has cartilage rings on it. This prevents the pipe collapsing on itself. If the trachea did collapse, it would disallow us from breath â¦ ing. Also the trachea might collapse and damage the esophagus (also known as the food pipe) which is behind it.he rings of cartilage strengthen the trachea so that it does not collapse, but remains open so that air can get through it. If It didn't it would collapse in on itself and yo â¦ u would be unable to breathe. 14 people found this useful.