Digestive System Quiz

Feces are about ______ percent water.

• 25

• 33

• 50

• 75

The ______ is the layer of the alimentary canal wall that absorbs nutrients.

• mucosa

• submucosa

• muscular layer

• serosa

Peristalsis slows in the elderly.

• True

• False

From the stomach, food passes into the duodenum, then the jejunum, and then the ileum.

• True

• False

The pancreas is part of the alimentary canal.

• True

• False

The esophagus passes through an opening in the diaphragm called the esophageal________.

• sphincter
• hiatus

• canal

• valve

What is the main part of the stomach is called?

• Fundus

• Pylorus

• Cardia

• Body

Activities of the digestive system generally increase when it is stimulated by ________ impulses.

• parasympathetic
• sympathetic

• somatic

• sensory

The mechanical breakup of food particles in the mouth is called ________.

• mastication
• salivation

• peristalsis

• absorption

The pyloric sphincter serves as a valve that controls the movement of food between the esophagus and stomach.

• True

• False