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?

Autonomic nervous system (A) Signup and view all the answers

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

Lining the abdominal wall (D) Signup and view all the answers

Which organ is responsible for propelling food to the esophagus?

Pharynx (A) Signup and view all the answers

What is the primary function of the upper esophageal sphincter?

Controls food entering the esophagus (C) Signup and view all the answers

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

Pharyngeal phase (D) Signup and view all the answers

What is the normal duration for swallowing solid food?

4-8 seconds (B) Signup and view all the answers

What is the primary function of the lower esophageal sphincter?

Controls the movement of food into the stomach (D) Signup and view all the answers

What is the approximate size of an empty stomach?

Half the size of a fist (B) Signup and view all the answers

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

Oblique muscle (B) Signup and view all the answers

What is the function of chemical digestion?

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

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

Neural control (D) Signup and view all the answers

What hormone stimulates the release of gastric acid?

Gastrin (A) Signup and view all the answers

Where does absorption primarily occur in the digestive system?

Small intestine (A) Signup and view all the answers

What is the function of the uvula in the mouth?

Stop food from entering the nasal cavity (B) Signup and view all the answers

What is the role of lingual lipase in the mouth?

Chemical digestion (A) Signup and view all the answers

What is the primary function of the tongue?

Taste sensation (B) Signup and view all the answers

What is the average amount of saliva produced per day?

1 - 1.5 L (C) Signup and view all the answers

What is the primary function of the salivary amylase enzyme?

Initiating the breakdown of carbohydrates (A) Signup and view all the answers

How many permanent teeth does a human have?

32 (C) Signup and view all the answers

What is the primary function of the pharynx?

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

What is the primary function of the esophagus?

Swallowing food (B) Signup and view all the answers

What is the primary function of the stomach?

To break down food into chyme (C) Signup and view all the answers

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

All of the above (D) Signup and view all the answers

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

To produce digestive enzymes and bicarbonate (B) Signup and view all the answers

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

To expose a larger surface area to digestive juices (B) Signup and view all the answers