Interective quiz on Human Digestion

Digestion starts in the _________, where food is chewed and mixed with saliva.

Answer explanation

Digestion starts in the mouth, where food is chewed and mixed with saliva, initiating the digestive process.

What is the primary function of the large intestine in the digestive system?

• Water absorption

• Nutrient absorption

• Enzyme production

• 
  Food breakdown

Answer explanation

The primary function of the large intestine is water absorption. It reabsorbs water from indigestible food matter, helping to form solid waste, while nutrient absorption mainly occurs in the small intestine.

Which of the following is an example of mechanical digestion?

• Enzymes breaking down carbohydrates

• Teeth chewing food

• Stomach acid dissolving food

• Nutrients being absorbed

Answer explanation

Mechanical digestion involves physically breaking down food into smaller pieces. Teeth chewing food is a clear example of this process, while the other options involve chemical digestion or absorption.

The process of breaking down food into smaller pieces so the body can absorb it is called _________.

Answer explanation

The process of breaking down food into smaller pieces for absorption is called digestion. This involves mechanical and chemical processes that convert food into nutrients the body can use.

What happens to food in the stomach?

• 
  It is absorbed into the blood

• It is chewed into smaller pieces

• It is mixed with digestive juices and broken down

• 
  It passes into the large intestine

Answer explanation

In the stomach, food is mixed with digestive juices, which contain enzymes and acids that break it down into a semi-liquid form. This process is essential for digestion, unlike absorption or chewing, which occur elsewhere.