Human Digestive System – Important Questions &
Answers
1. What is digestion?
Digestion is the process of breaking down food into simple substances that can be
absorbed by the body.
2. Name the main organs of digestive system.
Mouth, esophagus, stomach, small intestine, large intestine.
3. What is the function of mouth?
Chewing food and mixing with saliva for initial digestion.
4. What is peristalsis?
The movement of food through the digestive tract by wave-like muscle contractions.
5. What happens in the stomach?
Food is mixed with gastric juices and proteins are digested.
6. What is the role of small intestine?
Completes digestion and absorbs nutrients.
7. What is the function of large intestine?
Absorbs water and forms waste.
8. Name important enzymes.
Amylase, pepsin, lipase.
Answers
1. What is digestion?
Digestion is the process of breaking down food into simple substances that can be
absorbed by the body.
2. Name the main organs of digestive system.
Mouth, esophagus, stomach, small intestine, large intestine.
3. What is the function of mouth?
Chewing food and mixing with saliva for initial digestion.
4. What is peristalsis?
The movement of food through the digestive tract by wave-like muscle contractions.
5. What happens in the stomach?
Food is mixed with gastric juices and proteins are digested.
6. What is the role of small intestine?
Completes digestion and absorbs nutrients.
7. What is the function of large intestine?
Absorbs water and forms waste.
8. Name important enzymes.
Amylase, pepsin, lipase.
