Small Intestine Absorption Structures
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Questions and Answers

What is the primary function of digestive enzymes?

  • To aid in the absorption of nutrients into the bloodstream
  • To facilitate the elimination of undigested waste material
  • To provide energy for the digestive process
  • To break down large food molecules into smaller nutrient molecules (correct)
  • Which part of the digestive system is primarily responsible for nutrient absorption?

  • Stomach
  • Large intestine
  • Esophagus
  • Small intestine (correct)
  • What is the function of microvilli in the small intestine?

  • To secrete digestive enzymes
  • To increase the surface area for nutrient absorption (correct)
  • To propel food through the digestive tract
  • To store undigested waste material
  • Which of the following is an example of extracellular digestion?

    <p>Digestion in the stomach of a human</p> Signup and view all the answers

    What is the primary function of villi in the small intestine?

    <p>To increase the surface area for nutrient absorption</p> Signup and view all the answers

    Which of the following nutrients is primarily absorbed in the small intestine?

    <p>All of the above</p> Signup and view all the answers

    What is the primary function of the gastrovascular cavity in simple animals like hydras?

    <p>Digestion and distribution of nutrients</p> Signup and view all the answers

    Which of the following is an advantage of having a complete digestive tract with two openings (mouth and anus)?

    <p>It reduces the risk of an animal digesting its own cells and tissues</p> Signup and view all the answers

    What is the primary function of the alimentary canal (digestive tube) in complex animals?

    <p>To carry out digestion and absorption in a stepwise, efficient fashion</p> Signup and view all the answers

    Which of the following is a characteristic of intracellular digestion?

    <p>Food particles are engulfed by endocytosis and digested within food vacuoles</p> Signup and view all the answers

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