digestion chapter 19

breaking down food into molecules small enough to enter the cells

• absorption

• ingestion

• digestion

• defecation

List the first four parts of the GI tract in order.

taking in food and liquids

• defecation

• digestion

• absorption

• ingestion

What 3 things does the GI tract secrete?

teeth cut and grind

• digestion

• mechanical

• ingestion

• chemical

digestive enzymes breakdown molecules

Getting nutrients into the body

Getting rid of waste (feces)

Bumps on tongue that could contain taste buds.

Membrane underneath tongue that limits movement