The lining of the colon is different from the small intestine in that there exists a large number of mucous cells that do not secrete enzymes but rather mucous. The mucous helps protect the wall from the bacterial fermentation inside. About 1.5 L of liquid digestive contents, chyme, pass into the colon.
Cancers are one category of non-communicable diseases that cannot be spread to others. Chicken pox and other conditions caused by viruses are communicable diseases. Non-infectious diseases involving the respiratory system are a class of non-communicable conditions.
Some of the key definitions related to non-communicable diseases include. 1  Epidemiological Transition-the notion that patterns of disease are fluid and will continue to evolve in the future. 2  Health Screenings-testing individuals before they develop symptoms or the disease itself.ome of the key definitions related to non-communicable diseases include. 1  Epidemiological Transition-the notion that patterns of disease are fluid and will continue to evolve in the future. 2  Health Screenings-testing individuals before they develop symptoms or the disease itself.