Digestive System

Salivary amylase digests

• starch to maltose

• maltose to starch

• starch to glucose

• glucose to starch

Chewing is a form of

• chemical digestion

• physical digestion

The process whereby food is pushed down the digestive tract is known as ___.

In the esophagus, the circular muscles behind the bolus ______ while the longitudinal muscles ______.

• contract, contract

• relax, relax

• contract, relax

• relax, contract

When two sets of muscles alternate to contract and relax, they are called ____ muscles.

The stomach is a organ that digests

• starch

• fats

• proteins

• sugars

The pH of the stomach is roughly

• 1 ~ 2

• 3 ~ 5

• 7 ~ 9

• 11 ~ 13

The acid present in the stomach is ______ acid.

Which of the following is false?

• The acid in the stomach kills bacteria present

• The acid in the stomach converts pepsinogen to pepsin

• The acid in the stomach digests protein

Name the organ that produces bile.