Digestive System Nerve Supply and Layers Quiz
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Digestive System Nerve Supply and Layers Quiz

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Questions and Answers

What is the main function of the enteric nervous system in the alimentary canal?

  • To provide taste sensation and avoid self-injury during chewing
  • To transport nutrients and oxygen to the organs of the alimentary canal
  • To restrict the activity of the autonomic nervous system
  • To regulate digestive secretions and motor functions (correct)
  • What is the primary role of the parasympathetic nervous system in the alimentary canal?

  • To increase gastrointestinal secretion and motility (correct)
  • To transport nutrients and oxygen to the organs of the alimentary canal
  • To restrict the activity of the enteric neurons
  • To hold the digestive organs in place within the abdominal cavity
  • What is the primary function of the stomach in the digestive process?

  • To release food to the duodenum for further digestion
  • To propel food slowly through the small intestine
  • To absorb some fat-soluble substances like alcohol and aspirin
  • To mix food with gastric juices and begin the chemical breakdown of proteins (correct)
  • What is the role of the pancreas in the digestive process?

    <p>To produce digestive enzymes and bicarbonate to neutralize acidic chyme</p> Signup and view all the answers

    What is the primary function of the hepatic portal system in the alimentary canal?

    <p>To transport protein and carbohydrate to the liver</p> Signup and view all the answers

    What is the primary function of the large intestine in the digestive process?

    <p>To further break down food residue and absorb residual water, electrolytes, and vitamins</p> Signup and view all the answers

    What is the main role of the parietal peritoneum in the alimentary canal?

    <p>To line the abdominal wall</p> Signup and view all the answers

    What is the primary function of the mouth in the digestive system?

    <p>To begin the chemical breakdown of carbohydrates and lipids</p> Signup and view all the answers

    What is the purpose of mechanical digestion in the digestive process?

    <p>To expose a larger surface area of food to digestive juices</p> Signup and view all the answers

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

    <p>To produce bile salts to emulsify lipids for digestion and absorption</p> Signup and view all the answers

    What is the primary function of the pharynx in the digestive system?

    <p>To propel food to the esophagus</p> Signup and view all the answers

    What is the purpose of peristalsis in the digestive process?

    <p>To propel food through the alimentary canal</p> Signup and view all the answers

    What is the role of the muscularis layer in the digestive system?

    <p>Mechanical digestion and peristalsis</p> Signup and view all the answers

    Which part of the digestive system is lined with non-keratinized, stratified squamous epithelium?

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

    What is the role of the mucosa layer in the digestive system?

    <p>Absorption of nutrients</p> Signup and view all the answers

    Which organ is NOT considered part of the alimentary canal or gastrointestinal (GI) tract?

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

    Where does mechanical digestion primarily occur in the digestive system?

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

    Which layer of the GI tract contains a collection of nerves called the submucosal plexus?

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

    What is the primary function of gastrin in the digestive system?

    <p>Stimulate release of gastric acid</p> Signup and view all the answers

    Which structure drops down from the soft palate to prevent food from entering the nasal cavity?

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

    What is the function of short reflexes in the digestive system?

    <p>Stimulate release of digestive juices</p> Signup and view all the answers

    How does hormonal control influence pancreatic secretion?

    <p>Stimulates bicarbonate release</p> Signup and view all the answers

    Which of the following is NOT a function of the tongue in digestion?

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

    What type of stimuli can trigger long reflexes in the digestive system?

    <p>Smell, sight, and taste of food</p> Signup and view all the answers

    Which of the following statements about the chemical digestive process is correct?

    <p>Excessive methane gas production can occur with certain foods due to bacterial action.</p> Signup and view all the answers

    Which of the following is NOT a component of feces?

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

    What is the primary function of the Valsalva maneuver?

    <p>To remove feces by increasing intra-abdominal pressure.</p> Signup and view all the answers

    What happens if defecation is delayed for too long?

    <p>More water is absorbed, making the feces firmer and leading to constipation.</p> Signup and view all the answers

    Which of the following statements about the liver is correct?

    <p>Bile is produced by the liver and aids in the emulsification of lipids in the small intestine.</p> Signup and view all the answers

    What is the primary function of the pancreas in the digestive system?

    <p>To perform both exocrine and endocrine functions related to digestion.</p> Signup and view all the answers

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