The Digestive System

Front

What type of digestion occurs in the stomach?

Back

Both mechanical and chemical digestion occur in the stomach.

Front

What is the role of enzymes in saliva during digestion?

Back

Enzymes in saliva help break down food chemically while chewing.

Front

Why doesn't the stomach digest itself with hydrochloric acid?

Back

The stomach lining is covered with mucus, which protects it from the acid.

Front

What is mechanical digestion?

Back

Mechanical digestion is the physical breakdown of food into smaller pieces, such as by the teeth and tongue.

Front

What is chemical digestion?

Back

Chemical digestion is the process of breaking down food into simpler molecules by enzymes and acids.

Front

What is the pharynx and its role in the digestive system?

Back

The pharynx is a common area for both food and air, serving as a passageway to the esophagus and trachea.

Front

What is the function of mucus in the stomach?

Back

Mucus protects the stomach lining from the corrosive effects of hydrochloric acid.

Front

What are the main organs involved in the digestive system?

Back

The main organs include the mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas, and gallbladder.

Front

How does the process of digestion begin?

Back

Digestion begins in the mouth with mechanical breakdown by teeth and chemical breakdown by saliva.

Front

What is the role of the small intestine in digestion?

Back

The small intestine is where most chemical digestion and nutrient absorption occur.