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.
According to statistics from the World Health Organization, non-communicable diseases are responsible for 63% of deaths worldwide, double the number of deaths from infectious diseases (including HIV/AIDS, tuberculosis, and malaria), maternal and perinatal conditions, and nutritional deficiencies combined.on-communicable diseases (NCDs), such as cancer, heart disease, lung disease, and diabetes, are now the major cause of death and disability worldwide.