The Digestive System
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Questions and Answers

Which of the following is NOT part of the alimentary canal?

  • Gallbladder (correct)
  • Stomach
  • Pharynx
  • Tongue
  • Which of the following is an accessory digestive organ?

  • Esophagus
  • Mouth
  • Small intestine
  • Salivary glands (correct)
  • What is the function of the teeth in the digestive process?

  • To produce digestive enzymes
  • To produce bile
  • To absorb nutrients
  • To break down food into smaller pieces (correct)
  • Which of the following organs produces digestive enzymes?

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

    What is the role of the liver in the digestive process?

    <p>To produce bile</p> Signup and view all the answers

    What type of enzymes does the stomach secrete to aid in food digestion?

    <p>Protein-digesting enzymes</p> Signup and view all the answers

    What is the purpose of the strong acids in the stomach?

    <p>To aid in protein digestion</p> Signup and view all the answers

    Where does the stomach send the partially digested food?

    <p>The small intestines</p> Signup and view all the answers

    What is the role of the stomach in the digestive process?

    <p>To partially digest food</p> Signup and view all the answers

    What is the result of the stomach's action on food?

    <p>Partially digested food</p> Signup and view all the answers

    What is the primary function of the esophagus in the upper gastrointestinal tract?

    <p>To transport food from the pharynx to the stomach</p> Signup and view all the answers

    What type of contractions aid in the movement of food through the esophagus?

    <p>Peristaltic contractions</p> Signup and view all the answers

    Which structure does the esophagus connect to receive food?

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

    What is the esophagus composed of?

    <p>Fibromuscular tissue</p> Signup and view all the answers

    Where does the esophagus transport food to?

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

    What is the primary function of the microvilli in the jejunum?

    <p>To increase the surface area of the GI tract</p> Signup and view all the answers

    Which part of the intestine connects the duodenum to the ileum?

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

    What is the jejunum responsible for in the digestive process?

    <p>Absorbing nutrients into the bloodstream</p> Signup and view all the answers

    The jejunum is a part of which system?

    <p>Digestive system</p> Signup and view all the answers

    What is the structure of the jejunum adapted to increase?

    <p>The surface area of the intestine</p> Signup and view all the answers

    What is the primary function of the digestive enzymes in the digestive process?

    <p>To break down proteins and emulsify fats into micelles</p> Signup and view all the answers

    What is the purpose of the bicarbonate in pancreatic juice?

    <p>To neutralize hydrochloric acid in the stomach</p> Signup and view all the answers

    What is the function of Brunner's glands in the duodenum?

    <p>To produce bicarbonate to neutralize stomach acid</p> Signup and view all the answers

    What is the result of the emulsification of fats into micelles?

    <p>The formation of smaller fat droplets for easier digestion</p> Signup and view all the answers

    What is the primary role of the pancreatic juice in the digestive process?

    <p>To neutralize stomach acid and provide a suitable pH for digestion</p> Signup and view all the answers

    Study Notes

    The Alimentary Canal

    • Consists of mouth, pharynx, esophagus, stomach, small intestine, and large intestine

    Accessory Digestive Organs

    • Include teeth, tongue, gallbladder, salivary glands, liver, and pancreas

    Upper Gastrointestinal Tract

    • Includes the esophagus, a fibromuscular tube that food passes through aided by peristaltic contractions
    • Food passes from the pharynx to the stomach through the esophagus

    Stomach Function

    • Secretes protein-digesting enzymes called proteases
    • Secretes strong acids to aid in food digestion
    • Partially digested food is sent to the small intestine

    Digestive Enzymes

    • Break down proteins
    • Break down bile
    • Emulsify fats into micelles

    Duodenum Function

    • Contains Brunner's glands that produce bicarbonate
    • Contains pancreatic juice that contains bicarbonate to neutralize hydrochloric acid in the stomach

    Jejunum Function

    • Midsection of the intestine connecting the duodenum to the ileum
    • Contains microvilli to increase the surface area of the GI tract

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    Description

    This quiz covers the different parts and functions of the human digestive system, including the alimentary canal and accessory digestive organs.

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