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Human Digestive System

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Questions and Answers

What is the main function of the digestive system?

To circulate blood
To support the bones
To protect the body from pathogens
To break down food, extract nutrients and water, and excrete waste (correct)

What is the role of saliva in the digestive process?

To transport food to the stomach
To cool down the food
To provide energy
To break down food into tiny parts (correct)

Which part of the digestive system moves food to the stomach after swallowing?

Large intestine
Pancreas
Small intestine
Esophagus (correct)

What does the stomach use to turn pieces of food into a thick liquid?

<p>Acids, enzymes, and its own movements (C)</p> Signup and view all the answers

What happens to the thick liquid in the stomach before reaching the small intestine?

<p>It is squeezed in small amounts (A)</p> Signup and view all the answers

Study Notes

Digestive System

Breaks down food, extracts nutrients and water, and excretes waste
Responsible for fueling the body to maintain health and activity

Digestion Process

Breaks down food into tiny molecules
Involves chewing, which produces saliva to break down food
Saliva acts as a digestive juice to aid in breaking down food

Stomach Function

Uses acids, enzymes, and muscle movements to liquefy food
Turns food into a thick liquid
Squeezes small amounts of the liquid into the small intestine

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Description

Discover the main functions of the human digestive system, including breaking down food, extracting nutrients and water, and excreting waste. Learn how chewing and digestive juices like saliva contribute to the process.