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
The commonly known N-95 filtering facepiece respirator or dust mask is one type of particulate respirator, often used in hospitals to protect against infectious agents. Particulate respirators are airpurifying respirators because they clean particles out of the air as you breathe.