DIGESTIVE SYSTEM

Why do we need food to break apart the food we eat?

• So it can fit into our stomachs

• So our bodies can use the nutrients from the food

• So liquids can be separated from solids

• So that our bodies' enzymes have something to do.

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Where does digestion begin?

• Our teeth

• Our stomach

• The esophogus

• Small intestines

Chewing is an example of what type of digestion?

• Dental

• Fragmentary

• Chemical

• Mechanical

If you wanted to find the glands that produce salivary amylase, where would you look?

• In your mouth

• In your throat

• In your intestines

• In your stomach

Place the following events in sequence: A) Food enters your large intestines

B) Food enters your small intestines

C) Food enters your esophagus

• A, B, C

• C, B, A

• C, A, B

• B, A, C

Hydrochloric acid is a caustic chemical that can burn your skin- and yet it exists in your stomach. How can this be?

• Your small intestines absorb all the hydrochloric acid

• The food in your stomach absorbs all the acid

• Your stomach lining protects you against burns

• The hydrochloric acid in your stomach is different from the hydrochloric acid you would find in a chemistry lab

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NGSS.HS-LS1-3

What is chyme?

• A particular type of digestive enzymes

• What food is called after it has been digested by the stomach

• A chemically active part of the small intestine

• The passage that leads from the small intestine to the large intestine

What might happen if you had your pancreas removed?

• Your intestines might have trouble breaking down food

• Your stomach might have trouble producing hydrochloric acid

• You would not be able to chew properly

• You would have trouble producing saliva

What is the main function of villi?

• They move food from the stomach to the small intestine

• They absorb nutrients into the bloodstream

• They absorb water from chyme

• They move food from the small intestine to the large intestine

What might happen if your large intestine did not absorb water from chyme?

• You couldn't digest food.

• You wouldn't be able to go to the bathroom.

• You would become dehydrated.

• Solid waste would not be able to move throughout the digestive system