Digestive System Nerve Supply and Structure Quiz
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Questions and Answers

What is the function of the myenteric plexus in the digestive system?

  • Regulating digestive secretions (correct)
  • Propelling food to the stomach
  • Transporting nutrients to the liver
  • Increasing GI secretion

Where is the serosa layer found in the digestive system?

  • Outside the abdominal cavity
  • Underneath the visceral peritoneum
  • Inside the intestines
  • Inside the abdominal cavity (correct)

What is the main function of the sympathetic nerves in the alimentary canal?

  • Restricting enteric neurons (correct)
  • Increasing GI secretion
  • Regulating digestive secretions
  • Propelling food to the stomach

Which nervous system is responsible for innervating the alimentary canal extrinsically?

<p>Autonomic nervous system (A)</p> Signup and view all the answers

What is the function of the parietal peritoneum in the digestive system?

<p>Lining the abdominal wall (D)</p> Signup and view all the answers

Which organ is responsible for propelling food to the esophagus?

<p>Pharynx (A)</p> Signup and view all the answers

What is the primary function of the upper esophageal sphincter?

<p>Controls food entering the esophagus (C)</p> Signup and view all the answers

What is the name of the phase of swallowing that involves the movement of food into the esophagus?

<p>Pharyngeal phase (D)</p> Signup and view all the answers

What is the normal duration for swallowing solid food?

<p>4-8 seconds (B)</p> Signup and view all the answers

What is the primary function of the lower esophageal sphincter?

<p>Controls the movement of food into the stomach (D)</p> Signup and view all the answers

What is the approximate size of an empty stomach?

<p>Half the size of a fist (B)</p> Signup and view all the answers

What is the name of the muscle that helps churn food in the stomach?

<p>Oblique muscle (B)</p> Signup and view all the answers

What is the function of chemical digestion?

<p>Breaking down complex food molecules into building blocks (B)</p> Signup and view all the answers

Which regulatory mechanism involves sensors for expansion of the stomach and activation of glands and muscles?

<p>Neural control (D)</p> Signup and view all the answers

What hormone stimulates the release of gastric acid?

<p>Gastrin (A)</p> Signup and view all the answers

Where does absorption primarily occur in the digestive system?

<p>Small intestine (A)</p> Signup and view all the answers

What is the function of the uvula in the mouth?

<p>Stop food from entering the nasal cavity (B)</p> Signup and view all the answers

What is the role of lingual lipase in the mouth?

<p>Chemical digestion (A)</p> Signup and view all the answers

What is the primary function of the tongue?

<p>Taste sensation (B)</p> Signup and view all the answers

What is the average amount of saliva produced per day?

<p>1 - 1.5 L (C)</p> Signup and view all the answers

What is the primary function of the salivary amylase enzyme?

<p>Initiating the breakdown of carbohydrates (A)</p> Signup and view all the answers

How many permanent teeth does a human have?

<p>32 (C)</p> Signup and view all the answers

What is the primary function of the pharynx?

<p>Handling food and air by involuntary muscle contraction (A)</p> Signup and view all the answers

What is the primary function of the esophagus?

<p>Swallowing food (B)</p> Signup and view all the answers

What is the primary function of the stomach?

<p>To break down food into chyme (C)</p> Signup and view all the answers

What is the role of the small intestine in the digestive process?

<p>All of the above (D)</p> Signup and view all the answers

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

<p>To produce digestive enzymes and bicarbonate (B)</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 to digestive juices (B)</p> Signup and view all the answers

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

<p>To store and concentrate bile (D)</p> Signup and view all the answers

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

<p>To propel and eliminate feces (A)</p> Signup and view all the answers

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