Description. In this clip the structure and function of a ciliated epithelial cell is described. Cilia are tiny hair like structures on the surface of the cell. The hairs sweep hair, mucus, trapped dust and bacteria up to the back of the throat where it can be swallowed.escription. In this clip the structure and function of a ciliated epithelial cell is described. Cilia are tiny hair like structures on the surface of the cell. The hairs sweep hair, mucus, trapped dust and bacteria up to the back of the throat where it can be swallowed.
What is the Training Within Industry â TWI program and how was it set up? The Training Within Industry (TWI) program is a program which supports the development of management skills of experienced operational employees and low and middle management superiors.
A TWA is the average exposure over a specified period of time, usually a nominal eight hours. This means that, for limited periods, a worker may be exposed to concentration excursions higher than the PEL, so long as the TWA is not exceeded and any applicable excursion limit is not exceeded.