Digestive System Unit test

How does food contribute to our overall health and well-being? (2 marks)

What is the main function of the digestive system? (1 mark)

• To break down food and absorb nutrients.
• To filter toxins from the blood.
• To produce sound

• To regulate body temperature.

Which organ produces saliva? (1 mark)

• Salivary glands
• Kidneys
• Liver
• Pancreas

What is the function of the oesophagus? (1 mark)

• To absorb nutrients from food and liquids.
• To digest food before it reaches the stomach.
• To produce saliva for digestion.
• To transport food and liquids from the mouth to the stomach.

What does the stomach do? (1 mark)

• The stomach filters toxins from the blood.
• The stomach digests food by mixing it with gastric juices and breaking it down into chyme.
• The stomach produces insulin to regulate blood sugar levels.
• The stomach absorbs nutrients directly into the bloodstream.

Which part absorbs most nutrients from food? (1 mark)

• Large intestine
• Stomach
• Esophagus
• Small intestine

Here is the diagram of the digestive system. Label its parts in order (3 marks)

The _____ _________ absorbs water from the undigested food. (1 mark)

Waste material is removed from the body through the ____. (1 mark)

What is the main role of hydrochloric acid (HCl) in the stomach? (1 mark)

• It digests fat
  

• It produces saliva
  

• It kills harmful microbes and helps digest proteins
  

• To neutralize bile acids in the stomach.