Digestive System Quiz

How does the tongue function as part of the digestive system?

• The tongue secretes digestive enzymes.

• The tongue begins mechanical digestion.

• The tongue absorbs nutrients.

• The tongue neutralizes stomach acid.

Differentiate between primary and secondary teeth.

• Primary teeth are stronger than secondary teeth.

• Secondary teeth are not as strong as primary teeth.

• Primary teeth are not as strong as secondary teeth.

• Secondary teeth are needed more than primary teeth.

How is a tooth attached to the bone of the jaw?

• By ligaments.

• By a layer of modified bone called cementum.

• By cartilage.

• By muscle fibers.

What stimulates salivary glands to secrete saliva?

• Taste receptors on the tongue send impulses to the brain.

• The presence of food in the stomach.

• The act of chewing.

• The smell of food.

Where are major salivary glands located?

• In the stomach lining.

• In the small intestine.

• Floor of the mouth, below the tongue, and near the ears.

• In the esophagus.

Which of the following is NOT a phase of swallowing?

• The Voluntary Phase.

• The Pharyngeal Phase.

• The Esophageal Phase.

• The Gastric Phase.

What is the function of the esophagus?

• Absorbs nutrients from food

• Transports food from the mouth through the throat and into the stomach

• Produces digestive enzymes

• Stores bile

Which is the most important digestive enzyme in gastric juice?

• Amylase

• Lipase

• Pepsin

• Trypsin

Why doesn’t the stomach digest itself?

• It has a thick muscular wall

• It is protected by the mucosal barrier

• It constantly produces new cells

• It has a low pH environment

What controls gastric juice secretion?

• Blood cells

• Nerves and hormones

• Muscle contractions

• Enzymes