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.
Communicable disease refers to diseases that can pass from one person to another. Non-communicable diseases occur in one person and cannot be passed on to another person. Communicable diseases are also known as infectious diseases, and non-communicable diseases are referred to as chronic.
âNon-communicable diseasesâ means which are not spread from one to another but affect health in large numbers causing public health issues. Eg. Ischaemic heart disease(Heart attacks) Diabetes mellitus; Hypertension; Accidents; Suicides; Etc.. Communicable diseases are prevented by good hygiene, good sanitation facilities and improving living standards.