The relative or absolute increase in the frequency of adenocarcinoma of the cervix in the 1980s, coupled with the introduction of the endocervical brush, broom, and other endocervical sampling devices, has stimulated us to examine more carefully and classify more precisely the lesions of the endocervix.
If you do have one of these systems you need to know whether it's a conventional or alternative septic system, and exactly how it works. Gravity System-A conventional system which uses gravity to force the wastewater out into the drain field. 2  These types of septic systems use gravel as a filter. 3  Pressure Distribution System-A conventional system which involves the use of a pump.
Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce. The circulatory system picks up oxygen in the lungs and drops it off in the tissues, then performs the reverse service for carbon dioxide.