Chemical Digestion and Nutrient Absorption Process Quiz
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Questions and Answers

Which enzyme works well in an acidic environment to break down large proteins into smaller sizes?

  • Intrinsic factor
  • Rennin (correct)
  • Amylase
  • Gastrin
  • What is the function of intrinsic factor in the process of digestion?

  • Aiding in the absorption of vitamin B12 (correct)
  • Mixing food with digestive enzymes
  • Breaking down proteins
  • Digesting carbohydrates
  • What enzyme continues to digest carbohydrates in the stomach?

  • Pepsin
  • Gastrin
  • Amylase (correct)
  • Rennin
  • Where are proteins digested in the human body?

    <p>Both in the stomach and small intestine</p> Signup and view all the answers

    Which substance is used for coating the stomach to protect it?

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

    What is the main function of mucous neck cells in the stomach?

    <p>To protect the stomach lining with mucus</p> Signup and view all the answers

    Which hormone is primarily secreted by the enteroendocrine cells in the stomach?

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

    What is the role of amylase in saliva?

    <p>Digests starch</p> Signup and view all the answers

    During swallowing, what is the function of the epiglottis?

    <p>Close the trachea (windpipe)</p> Signup and view all the answers

    What is the purpose of peristalsis in the digestive tract?

    <p>Move food along the digestive tract</p> Signup and view all the answers

    Which region of the stomach exhibits tonic contractions?

    <p>Oral region of the stomach</p> Signup and view all the answers

    Which part of the small intestine is the longest and has the most coiled appearance?

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

    What is the function of Brunner's gland located in the small intestine?

    <p>Produces mucus to help neutralize acidic chyme</p> Signup and view all the answers

    What type of epithelium is present in the small intestine lining?

    <p>Simple columnar epithelium</p> Signup and view all the answers

    Which part of the small intestine has the most circular folds known as plicae circulares?

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

    What is the specific function of Peyer's patches found in the small intestine?

    <p>Act as an immune defense mechanism</p> Signup and view all the answers

    Which part of the small intestine lacks submucosal glands?

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

    What is the main function of mechanical digestion?

    <p>To physically break down food into smaller units</p> Signup and view all the answers

    Where does the main duct eventually drain into?

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

    Which structure is responsible for draining bile directly into the duodenum above the common bile duct?

    <p>Accessory duct</p> Signup and view all the answers

    What is the role of the accessory duct in digestion?

    <p>To provide an alternative route for bile drainage</p> Signup and view all the answers

    How does the arterial supply of the GI tract contribute to digestion?

    <p>By providing oxygen and nutrients to the digestive organs</p> Signup and view all the answers

    Where is the head of the pancreas located?

    <p>In the Duodenal curve</p> Signup and view all the answers

    Which part of the pancreas is triangular and lies horizontally in front of the Abdominal aorta?

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

    What structure is the tail of the pancreas related to functionally?

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

    What is the function of the pancreatic duct?

    <p>To transport enzymes to aid in digestion</p> Signup and view all the answers

    Which part of the pancreas contains islets of langerharns that secrete various hormones?

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

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