16-3 Final Digestion and Absorption

What Happens in the Small Intestine?

Small intestine - p.526

• The part of the digestive system in which most chemical digestion takes place.

Small intestine - p.526

Small Intestine

Small intestine - p.526

Liver - p.527

• The largest and heaviest organ inside the body.

• The liver produces bile

Liver - p.527

Liver - p.527

Bile - p.527

• A substance produced by the liver that breaks up fat particles.

Bile - p.527

Bile - p.527

Gallbladder - p.527

• The organ that stores bile after it is produced by the liver.

Gallstones

Gallstones

Pancreas - p.528

• A triangular organ that produces enzymes that flow into the small intestine

Pancreas - p.528

Pancreas - p.528

Circulatory System

Villi - p.528

• Tiny finger-shaped structures that cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed.

Villi - p.528

Villi - p.528

What Happens in the Large Intestine?

Large intestine - p.529

• The last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body.

Large intestine - p.529

Large intestine - p.529

Rectum - p.529

• A short tube at the end of the large intestine where waste material is compressed into a solid form before being eliminated.

Rectum - p.529

Rectum - p.529

Exiting the Body

Anus - p.542

• The opening at the end of an organism’s digestive system through which wastes exit.

Anus - p.542