Digestive System

What are the three main functions of the digestive system?

• Break down food, absorb nutrients, eliminate waste

• Pump blood, produce energy, store vitamins

• Filter air, produce hormones, regulate body temperature

• Transport nutrients, break down waste, store energy

What is the process called when food is transformed into different substances through chemical reactions?

• Mechanical digestion

• Cellular respiration

• Diffusion

• Chemical digestion

Where does chemical digestion mainly happen?

• Mouth

• Stomach

• Intestinal tract

• Esophagus

What is the function of the villi in the small intestine?

• To eliminate waste

• To absorb nutrients

• To produce enzymes

• To store bile

What is the purpose of the large intestine in the digestive system?

• To produce enzymes

• To eliminate waste

• To absorb nutrients

• To break down food

What is the alimentary canal also known as?

• Respiratory tract

• Gastrointestinal tract

• Circulatory system

• Nervous system

What do animals like worms and certain birds have to help digest food?

• Teeth

• Gizzard

• Stomach

• Crop

What do cows do to aid in the digestion of tough plant fibers?

• Chew food again

• All of the above

• Swallow stones

• Regurgitate food

What type of animals have a longer alimentary system with respect to their body length?

• Carnivores

• Herbivores

• Insects

• Omnivores

Which organs are not part of the alimentary canal in the digestive system?

• Stomach and small intestine

• Mouth and esophagus

• Liver and large intestine

• Pancreas and gallbladder