Overview of the Digestive System

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Questions and Answers

What are the three main groups of nutrients humans need?

Carbohydrates, proteins, fats

What is the role of digestion?

To break down food into tiny pieces for absorption into body cells

What is the enzyme in saliva that helps break down carbohydrates?

Salivary amylase

What enzyme does the stomach produce to break down proteins?

<p>Pepsin</p> Signup and view all the answers

What is the main function of the gallbladder's bile in the small intestine?

<p>To neutralize stomach acid and emulsify fats</p> Signup and view all the answers

What organ produces most of the digestive enzymes for the small intestine?

<p>Pancreas</p> Signup and view all the answers

What are the finger-like projections on the inside lining of the small intestine called?

<p>Villi</p> Signup and view all the answers

What are the two adaptations of the villi that aid in absorption of nutrients?

<p>Single layer of surface cells and good blood supply</p> Signup and view all the answers

What is the main function of the small intestine?

<p>To absorb digested food into the bloodstream</p> Signup and view all the answers

What is the role of hydrochloric acid in the stomach?

<p>To kill bacteria and provide the right environment for pepsin to work</p> Signup and view all the answers

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