Human Digestive System Quiz
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Questions and Answers

Which organ secretes protein-digesting hydrochloric acid (HCl) and the enzyme pepsin?

  • Stomach (correct)
  • Mouth
  • Pharynx
  • Esophagus

    • What is the primary function of the digestive system?

  • Absorbing nutrients into the bloodstream (correct)
  • Producing saliva for food digestion
  • Mixing food with water and digestive juices
  • Storing food for future use

    • What is the function of salivary amylase in the digestive process?

  • Aiding in peristalsis in the esophagus
  • Breaking down starch in the mouth (correct)
  • Neutralizing acidic chyme in the small intestine
  • Breaking down proteins in the stomach

    • Which structure moves food into the stomach by peristalsis?

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

    What is the primary role of the small intestine in digestion?

    <p>Receiving secretions from accessory organs for digestion</p> Signup and view all the answers

    Which organ is primarily responsible for biting and chewing food?

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

    Where does the digestion of starch begin?

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

    Which organ secretes bile salts to break down fats?

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

    What is the function of the large intestine?

    <p>Storage and elimination of undigested waste material</p> Signup and view all the answers

    Which structure carries bile into the duodenum?

    <p>Common bile duct</p> Signup and view all the answers

    What is the function of the lacteal in the small intestine?

    <p>Absorb digested fats into the lymph</p> Signup and view all the answers

    What is the terminal portion of the small intestine called?

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

    What is the function of the lower esophagus sphincter (LES)?

    <p>Prevent stomach from emptying into the intestine</p> Signup and view all the answers

    Which organ secretes a variety of digestive enzymes?

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

    What is the main function of the hepatic portal system?

    <p>Bring blood directly from abdominal organs to the liver for processing</p> Signup and view all the answers

    What organ is responsible for secreting bile needed for digestion and absorption of fats?

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

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