Joints can be separated into two classes: functional and structural. Joints are divided into three different functional classes. They are synarthroses, amphiarthroses, and diarthroses. Synarthroses means the joint is immovable, amphiarthroses means the joint is slightly moveable, and diarthroses means the joint is freely moveable.
minimum recommended protection lightweight and easy to use requires no maintenance osha cdc epa and nyc doh mh recommend using a n95 disposable respirator as minimum protection from mold and dust
Workers will be able to identify the appropriate respirators. required for the different atmospheric hazards. Respirator Types. Two basic types of respirators are: â¢ air-purifying; and. â¢ supplied-air respirators. Air-purifying respirators remove airborne contaminants such. as particles, toxic vapors, and/or gases. They are appropriate. for use in environments of low-level contamination and in. environments where there is sufficient oxygen.