Digestion Review

An example of mechanical digestion is:

• teeth chewing food

• enzymes in the stomach breaking down food

• food being pushed through the esophagus

• water being reabsorbed in the large intestines

An example of chemical digestion is:

• teeth chewing food

• enzymes in the stomach breaking down food

• food being pushed through the esophagus

• water being reabsorbed in the large intestines

An example of peristalsis in the digestive system is:

• food being pushed through the esophagus

• food being pushed through the small intestines

• food being pushed through the large intestines

• all of the above are examples

Diarrhea is a digestive problem that occurs in the large intestines due to:

• too little water being reabsorbed making the stool (feces) too soft and frequent

• too much water being reabsorbed making stool (feces) hard and difficult to pass

• too many enzymes eating away at the large intestines

• too much acid in the large intestines causing a burning sensation

Constipation is a digestive problem that occurs in the large intestines due to:

• too much water being reabsorbed making stool (feces) hard and difficult to pass

• too little water being reabsorbed making stool (feces) too soft and frequent

• too many enzymes eating away at the large intestines

• too much acid in the large intestines causing a burning sensation

Which letter in the diagram is identifying the small intestines?

• C

• J

• D

• H

Which letter in the diagram is identifying the part that produces saliva for the mouth?

• A

• G

• F

• H

Which letter in the diagram is identifying the part where the most absorption of nutrients occurs?

• J

• D

• H

• C

Stomach ulcers occur in the stomach mainly because of:

• stomach acid backing up into the esophagus

• excess water in the feces

• too many enzymes in the stomach

• a bacterial infection in the stomach

The main cause of heartburn is:

• a bacterial infection in the heart

• acid from the stomach leaking into the esophagus

• enzymes eating away at the stomach

• the small intestines leaking some enzymes