The Digestive System

Involuntary muscle contractions which move a bolus through the gastrointestinal tract are called

• mastication.

• defication.

• peristalsis.

• chyme.

Hydrochloric acid is secreted in the _______________ .

• stomach

• liver

• large intestine

• spleen

Tags

NGSS.MS-LS1-7

Most nutrient absorption occurs in the ________________ .

• large intestine

• small intestine

• mouth

• esophagus

Which of the following is the correct order for the major parts of the gastrointestinal tract?

• mouth, stomach, small intestine, esophagus, large intestine.

• mouth, esophagus, stomach, large intestine, small intestine.

• large intestine, small intestine, stomach, esophagus, mouth.

• mouth, esophagus, stomach, small intestine, large intestine.

Which of the following is the enzyme that breaks down the starch in our food into smaller molecules?

• lactic acid

• salivary amylase

• saliva

• maltose

The villi provides a surface area for the absorption of nutrients into the bloodstream.

• True

• False

Tags

NGSS.MS-LS1-7

Incisor teeth _____________.

• are sharp and used to cut food.

• are used to tear food.

• are used to crush and grind food.

• are at the very back and on each side of the upper and lower jaw.

Canine teeth _____________.

• are sharp and used to cut food.

• are used to tear food.

• are used to crush and grind food.

• are at the very back and on each side of the upper and lower jaw.

Premolars and molars _____________.

• are sharp and used to cut food.

• are used to tear food.

• are used to crush and grind food.

• are at the very back and on each side of the upper and lower jaw.

Wisdom teeth _____________.

• are sharp and used to cut food.

• are used to tear food.

• are used to crush and grind food.

• are at the very back and on each side of the upper and lower jaw.

Tags

NGSS.MS-LS4-2