The digestive system.

What is the main function of the digestive system?

• To release nutrients into the bloodstream.

• To transport oxygen in the body
• No one of the others

• To regulate body temperature

What is the main function of the gastric juices?

• To break down the food.

• To regulate body temperature
• To produce vitamin C
• To clean the stomach lining

What is the first stage of the digestive system.

• Excretion

• Absorption

• Assimilation

• Ingestion

What is the function of the small intestine in the digestive system?

• To absorb nutrients from food.

• To regulate blood sugar levels.

• To produce bile for digestion.

• To filter waste products.

Where does the process of digestion begin?

• Stomach

• Small intestine

• Mouth

• Esophagus

What is the function of the esophagus in the digestive system?

• To absorb nutrients from food.

• To regulate blood sugar levels.

• To transport food from the mouth to the stomach.

• To filter waste products.

The digestive system starts in the

What is the final stage of the digestive system?

• Excretion

• Absorption

• Assimilation

• Ingestion

What is the reflux?

• The reflux is the backward flow of stomach acid into the esophagus.
• The reflux is the production of saliva in the mouth.
• The reflux is the absorption of nutrients in the small intestine.
• The reflux is the process of digesting food in the stomach.

How doest the acid of the stomach affect the esophagus?

• It causes irritation.

• It helps in digestion.

• It strengthens the esophageal muscles.

• It has no impact on the esophagus.