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.
Noun. 1. communicable disease-a disease that can be communicated from one person to another. disease-an impairment of health or a condition of abnormal functioning. contagion, contagious disease-any disease easily transmitted by contact. infectious disease-a disease transmitted only by a specific kind of contact.