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.
A disease is a condition in the body that disrupts normal functions. Why are some diseases contagious while others aren't? This lesson discusses the difference between communicable and noncommunicable diseases. What Are Diseases. Let's say you're sitting at a gate in a major American airport, waiting to board a flight.