Digestive System Overview
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Questions and Answers

What is the function of mucus in the digestive tract?

  • To break down large food molecules into smaller molecules
  • To lubricate the food and protect the lining of the digestive tract (correct)
  • To stimulate smooth muscle contraction and glandular secretion
  • To aid in the movement of food through the digestive tract
  • What is the primary function of liver secretions in the digestive process?

  • To break large lipids into smaller droplets for digestion and absorption (correct)
  • To stimulate smooth muscle contraction and glandular secretion
  • To aid in the movement of food through the digestive tract
  • To secrete enzymes for the breakdown of large food molecules
  • Which type of digestion involves the mastication and mixing of food?

  • Mechanical digestion (correct)
  • Peristaltic digestion
  • Chemical digestion
  • Segmental digestion
  • What is the function of enteric sensory neurons in the digestive system?

    <p>Detect changes in the chemical composition of digestive tract contents or mechanical changes</p> Signup and view all the answers

    Which neurotransmitter stimulates digestive tract motility and secretions?

    <p>Acetylcholine</p> Signup and view all the answers

    What do hormones such as gastrin and secretin help regulate in the digestive tract?

    <p>Digestive enzymes secretion</p> Signup and view all the answers

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

    <p>Control local reflexes within the ENS</p> Signup and view all the answers

    Which major neurotransmitter inhibits digestive tract motility and secretions?

    <p>Norepinephrine</p> Signup and view all the answers

    What is Hirschprung disease or megacolon caused by?

    <p>Absence of enteric neurons in the distal large intestine</p> Signup and view all the answers

    Which process primarily occurs in the large intestine?

    <p>Elimination</p> Signup and view all the answers

    What is the term used to refer to the movement of food from one end of the digestive tract to the other?

    <p>Propulsion</p> Signup and view all the answers

    Which term is used to describe the intake of solid or liquid food into the stomach?

    <p>Ingestion</p> Signup and view all the answers

    What is the technical term for the digestive tract extending from the mouth to the anus?

    <p>Alimentary canal</p> Signup and view all the answers

    Which organ is primarily responsible for secreting fluids into the digestive tract?

    <p>Salivary glands</p> Signup and view all the answers

    What is the collective term for the oral cavity, pharynx, esophagus, stomach, small intestine, and large intestine?

    <p>Gastrointestinal tract</p> Signup and view all the answers

    How long does it take for food to travel the entire length of the digestive tract?

    <p>24-36 hours</p> Signup and view all the answers

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