Lesson 6- The large intestine

Question 1

Feces

Answer 1

About 40% water; solid portion consists of bacteria, fibre, and other indigestible solids; oxidized iron and the products of bilirubin metabolism give feces its brown colour

Question 2

Large intestine (colon)

Answer 2

Important for the absorption of water, production of vitamins, and storage of indigestible materials, such as plant fibre (cellulose)

Question 3

Large intestine bacteria

Answer 3

There is 100 trillion bacteria in the large intestine and it uses indigestible materials as food, which produces molecules that give feces and gas their unpleasant odor. The bacteria have nutrients and a stable environment within the large intestine. In return they produce vitamins and other molecules that are beneficial to the body