Digestive System Functions and Enzymes

The video provides an overview of the digestive system, starting from the mouth where digestion begins with saliva and enzymes. It explains the role of the pharynx and the process of swallowing, followed by the stomach's function in breaking down food with acids and enzymes. The small intestine is highlighted as the main site for digestion and absorption, with contributions from the pancreas and liver. Finally, the large intestine's role in absorbing water and electrolytes is discussed, concluding with a brief mention of future topics.

What is the primary function of saliva in the digestive process?

• To neutralize stomach acid

• To digest fats

• To moisten and clean the mouth

• To break down proteins

Which enzyme in the mouth begins the digestion of carbohydrates?

• Amylase

• Lipase

• Nuclease

• Pepsin

What is the role of the epiglottis during swallowing?

• To open the esophagus

• To propel food to the stomach

• To close the passage to the lungs

• To secrete digestive enzymes

What is the primary function of hydrochloric acid in the stomach?

• To break down food

• To neutralize bile

• To digest carbohydrates

• To absorb nutrients

Which enzyme is responsible for protein digestion in the stomach?

• Nuclease

• Lipase

• Pepsin

• Amylase

What stimulates the gallbladder to release bile?

• Amylase

• Pepsinogen

• Hydrochloric acid

• CCK (cholecystokinin)

What is the main role of bile in digestion?

• To digest nucleotides

• To digest fats

• To digest proteins

• To digest carbohydrates

Which organ produces bicarbonate to neutralize stomach acid?

• Small intestine

• Gallbladder

• Liver

• Pancreas

What is the primary function of the large intestine?

• To secrete bile

• To absorb water and electrolytes

• To digest proteins

• To produce digestive enzymes

What is the function of the appendix?

• To aid in digestion

• To produce enzymes

• To store bile

• Its function is uncertain but may have an immune role