Small Intestine Adaptations Quiz

What is the function of the small intestine?

• Breaking down large food molecules

• Absorbing the products of digestion

• Producing enzymes for digestion

• Transporting blood to the digestive system

How long is the human small intestine?

• 1 meter

• 3 meters

• 5 meters

• 10 meters

What is the purpose of villi in the small intestine?

• To increase the length of the intestine

• To produce enzymes for digestion

• To provide a large surface area for absorption

• To transport blood to the bloodstream

What is the function of microvilli in the small intestine?

• To increase the length of the intestine

• To produce enzymes for digestion

• To provide a large surface area for absorption

• To transport blood to the bloodstream

What is the role of the blood supply in the villi?

• To remove the products of digestion

• To produce enzymes for digestion

• To increase the concentration gradient

• To transport blood to the bloodstream

What does the thin membrane under the villi ensure?

• A long diffusion path

• A short diffusion path

• A slow rate of diffusion

• A thick diffusion path

What is the main method of absorption in the small intestine?

• Diffusion

• Active transport

• Osmosis

• Filtration

What happens to molecules that cannot be absorbed by diffusion?

• They are broken down by enzymes

• They are transported to the large intestine

• They are absorbed by active transport

• They are excreted as waste

What is the purpose of digestion in the body?

• To produce energy

• To eliminate waste

• To break down food into smaller molecules

• To transport nutrients to the cells

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

• To absorb water

• To produce enzymes for digestion

• To store waste

• To absorb the products of digestion