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.
Trachea. The trachea is a wide flexible tube, the lumen of which is kept open by 20 tracheal cartilages, which are C-shaped rings of hyaline cartilage. The gaps between the rings of cartilage are filled by the trachealis muscle-a bundle of smooth muscle, and fibroelastic tissue.ucosa and sub-mucosa of Trachea. The respiratory mucosa is made up of the epithelium and supporting lamina propria). The epithelium is tall columnar pseudostratified with cilia and goblet cells.