Digestive System Overview

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Questions and Answers

What is the main purpose of the digestive system?

  • Storing large molecules for future use
  • Reassembling large molecules into even larger compounds
  • Preventing large molecules from entering the body
  • Breaking down large molecules into smaller subunits for usability (correct)

Why are large molecules typically broken down into smaller subunits?

  • Large molecules are already in usable form
  • Large molecules are more nutritious than small subunits
  • Large molecules are easily absorbed into cells
  • Large molecules are chemically inert and need to be made usable (correct)

What is the function of the gall bladder in the digestive system?

  • Metabolizing absorbed nutrients
  • Producing key enzymes for starch digestion
  • Storing and secreting bile to emulsify fats (correct)
  • Absorbing water and dissolved minerals

What causes the unidirectional movement of food along the alimentary canal?

<p>Peristalsis from contraction of sequential longitudinal muscles (A)</p> Signup and view all the answers

Where does nutrient absorption primarily take place in the digestive system?

<p>Small intestine (A)</p> Signup and view all the answers

What is the main function of the salivary glands in the digestive process?

<p>Moistening food bolus for starch digestion (B)</p> Signup and view all the answers

What is the function of amylase in the digestive system?

<p>Digests amylopectin into dextrin chains (C)</p> Signup and view all the answers

Which enzyme catalyzes hydrolysis reactions in the digestive system?

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

Where is glucose stored in the body?

<p>As glycogen in the liver (A)</p> Signup and view all the answers

What is the main function of churning in the digestive process?

<p>Breaks down food via physical actions (C)</p> Signup and view all the answers

Which organ is responsible for regulating the uptake of glucose?

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

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