Human Digestive System Quiz

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Questions and Answers

What type of nutrients is primarily absorbed in the small intestine?

  • Proteins (correct)
  • Fats (correct)
  • Minerals
  • Vitamins

Which of the following structures is primarily responsible for nutrient absorption?

  • Pancreas
  • Stomach
  • Liver
  • Intestinal villi (correct)

What role does the liver play in digestion?

  • Bile production (correct)
  • Carbohydrate storage
  • Vitamin absorption
  • Protein digestion

Which of these is NOT a function of the digestive system?

<p>Hormone regulation (A)</p> Signup and view all the answers

What is the primary function of the large intestine?

<p>Water reabsorption (C)</p> Signup and view all the answers

Flashcards

Nutrient Absorption in Small Intestine

Proteins are the nutrients primarily absorbed in the small intestine.

Intestinal Villi

Intestinal villi are primarily responsible for nutrient absorption in the small intestine.

Liver's Role in Digestion

The liver produces bile, which aids in the digestion and absorption of fats.

Non-Function of the Digestive System

Hormone regulation is NOT a primary function of the digestive system; its main functions include ingestion, digestion, absorption, and elimination.

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Primary Function of Large Intestine

The large intestine primarily reabsorbs water and electrolytes from undigested material.

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Study Notes

Nutrient Absorption

  • The small intestine is the primary site for nutrient absorption.
  • The majority of carbohydrates, proteins, fats, and vitamins are absorbed in this section.

Structure of Absorption

  • The villi and microvilli of the small intestine are the primary structures responsible for nutrient absorption.
  • These structures increase the surface area available for the uptake of digested nutrients.

Liver Function in Digestion

  • The liver is a crucial organ in digestion, even though it's not directly part of the digestive tract.
  • It produces bile, a substance that helps break down fats in the small intestine.
  • The liver also plays a role in storing and releasing glucose, detoxifying harmful substances, and synthesizing proteins necessary for digestion.

Functions of the Digestive System

  • The digestive system is responsible for breaking down food into usable nutrients, absorbing those nutrients, and eliminating waste products.
  • It also plays a role in immune system function and hormone production.

Large Intestine Function

  • The large intestine's primary role is to absorb water and electrolytes from the remaining digested food.
  • It also forms and stores feces before they are eliminated from the body.
  • The large intestine also houses bacteria that play a role in breaking down certain indigestible fibers.

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