Human Digestive System

Multiple Choice

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

Multiple Choice

Where is the digestion of food completed?

• liver

• large intestine

• stomach

• small intestine

Multiple Choice

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

Multiple Choice

Where does carbohydrate digestion begins?

• liver

• mouth

• oesophagus

• stomach

Multiple Choice

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

• gastric juice

• mucus

• pancreatic juice

• saliva

Multiple Choice

This is an image of the

• stomach
• small intestine
• esophagus
• large intestine

Multiple Choice

Which digestive organ is represented by the letter B

• Pancreas

• Liver

• Mouth

• small intestine

Multiple Choice

What is the function of a liver?

• To call Raegan a gweeb

• to transfer foods

• to produce enzymes

• to produce bile

Multiple Choice

What is the process known as peristalsis

• The process that transfers food from the mouth to the stomach. Also known as swallowing

• The process that breaks down food by chewing and mashing

Fill in the Blanks

is the end product of digestion of the food class protein.