Human Digestive System Functions

The video explores the human digestive system by comparing it to machines like engines and power plants. It explains how the body processes food, starting with saliva production and chewing, followed by the stomach's role in breaking down food with gastric juices. The small intestine absorbs nutrients, while the large intestine handles waste. The video concludes with a reminder to eat a balanced diet for optimal body function.

What is the primary function of the human digestive system?

• To protect against diseases

• To control body temperature

• To circulate blood

• To produce energy from food

What triggers the initial step in the digestion process?

• The touch of food

• The sound of cooking

• The smell of food

• The sight of food

What is the role of saliva in digestion?

• To change the color of the food

• To lubricate and break down food

• To cool down the food

• To add flavor to the food

What is the scientific term for chewing?

• Mastication

• Peristalsis

• Ingestion

• Deglutition

What prevents food from entering the lungs during swallowing?

• The epiglottis

• The trachea

• The diaphragm

• The esophagus

What is the main function of gastric juices in the stomach?

• To store food

• To dissolve food

• To break down fats, proteins, and carbohydrates

• To absorb nutrients

Where does most of the nutrient absorption occur in the digestive system?

• In the esophagus

• In the stomach

• In the small intestine

• In the large intestine

What is the role of the pancreas in digestion?

• To produce bile

• To secrete insulin

• To store vitamins

• To filter blood

What happens to the waste products after nutrient absorption?

• They are stored in the stomach

• They are absorbed by the small intestine

• They are eliminated through the large intestine

• They are converted into energy

What is a recommended dietary practice to keep the digestive system healthy?

• Eating as quickly as possible

• Eating only one type of food

• Consuming a variety of foods from all food groups

• Avoiding all fats