The Process of Digestion

The video explains the process of digestion, starting with ingestion in the mouth, where mechanical and chemical digestion begins. Food is then moved through the esophagus to the stomach, where further digestion occurs. The small intestine plays a crucial role in nutrient absorption, aided by villi. Finally, the large intestine absorbs water and processes undigested food with the help of bacteria.

What is the primary role of enzymes in the mouth during digestion?

• To absorb nutrients

• To physically break down food

• To chemically break down food

• To transport food to the stomach

How does the esophagus move food towards the stomach?

• By gravity

• By peristalsis

• By chemical reactions

• By enzymatic action

What is the function of hydrochloric acid in the stomach?

• To transport food to the small intestine

• To absorb nutrients

• To neutralize stomach acids

• To chemically break down food

What is the primary function of villi in the small intestine?

• To transport food to the large intestine

• To produce digestive enzymes

• To increase surface area for absorption

• To break down fats

What happens to undigested food in the large intestine?

• It is absorbed into the bloodstream

• It is broken down by bacteria

• It is converted into chyme

• It is chemically digested