Digestive system

This is an image of the

• stomach
• small intestine
• esophagus
• large intestine

What is the function of the digestive system?

• to break down and absorb nutrients
• to support and protect our bodies
• to produce vitamin D
• to help us move

Tags

NGSS.MS-LS2-3

Which of the following correctly describes the purpose of digestion?

• To break down complex food molecules into simple soluble molecules

• To make complex food molecules from simple soluble molecules

• To make use of simple soluble food molecules

• To remove complex food molecules from the body

Tags

NGSS.MS-LS1-7

Which enzyme does the stomach produce?

• amylase

• lipase

• maltase

• protease

Where is the digestion of foods completed?

• liver

• large intestine

• stomach

• small intestine

Why is the oesophagus muscular?

• To break the food into even smaller pieces

• To produce enzymes to digest food

• To push food from the mouth into the stomach

• To move the food back and forth in two directions

Where does carbohydrate digestion begin?

• liver

• mouth

• oesophagus

• stomach

Where does protein digestion begin?

• large intestine

• mouth

• small intestine

• stomach

Select all the enzymes present in the intestinal juice.

• amylase

• lipase

• maltase

• protease

Which of the following kills bacteria in the human alimentary canal?

• hydrochloric acid

• mucus

• pancreatic juice

• saliva