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10th Grade Biology: Digestive System Components

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10th Grade Biology: Digestive System Components

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Questions and Answers

What is the main function of the mouth in the digestive system?

To grind and crush food into smaller pieces

To store food temporarily before it enters the stomach

To absorb nutrients into the bloodstream

To mix food with saliva that contains enzymes to break down carbohydrates (correct)

Which part of the digestive system is responsible for the majority of nutrient absorption?

Small intestine (correct)

Stomach

Mouth

Large intestine

What is the role of the pancreas in the digestive system?

To produce enzymes to break down proteins, carbohydrates, and fats (correct)

To absorb nutrients into the bloodstream

To mix food with stomach acid

To store bile from the liver

What is the role of bile in the digestive system?

<p>To emulsify fats, making them easier to digest</p> Signup and view all the answers

What is the function of the large intestine?

<p>To store and concentrate waste</p> Signup and view all the answers

Study Notes

Components of the Digestive System

Mouth: consists of teeth, tongue, and salivary glands
Esophagus: muscular tube that carries food to the stomach
Stomach: muscular sac that secretes digestive enzymes and acids
Small intestine: long, thin tube where most nutrient absorption occurs
Liver: produces bile to break down fats
Pancreas: produces digestive enzymes
Gallbladder: stores bile from the liver
Large intestine (colon): absorbs water and electrolytes
Rectum: stores feces until eliminated through the anus

Processes of the Digestive System

Ingestion: taking food into the mouth
Mechanical digestion: breaking down food into smaller pieces (chewing, grinding)
Chemical digestion: breaking down food into smaller molecules (enzymes, acids)
Absorption: nutrients absorbed into bloodstream through intestinal walls
Elimination: waste products eliminated from the body through the anus

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Description

This quiz covers the components and processes of the digestive system, suitable for 10th grade biology students. Test your knowledge of the human body's digestive system!