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.
Non-infectious cannot be spread from person to person. Infectious can be spread from person to person. This would include Viruses, Fungi, and STD's Infectious diseases are â¦ caused by pathogens, which are disease causing organisms.