Digestive System Overview

What is the function of the myenteric plexus in the muscularis?

To carry away absorbed nutrients
To control contractions (correct)
To sense the amount of food present
To regulate digestive chemicals

What is the purpose of the hepatic portal system?

To deliver oxygen and nutrients to the alimentary canal
To remove non-absorbed and undigested material from the body
To regulate the amount of digestive chemicals in the gut
To take nutrient-rich blood from the small intestine to the liver (correct)

What is the difference between propulsion and peristalsis?

Propulsion is voluntary, while peristalsis is automatic (correct)
Propulsion is the movement of food through the esophagus, while peristalsis is the movement of food through the small intestine
Propulsion is the removal of non-absorbed material, while peristalsis is the absorption of nutrients
Propulsion is the act of chewing, while peristalsis is the breakdown of food

What is the purpose of segmentation in the small intestine?

To move food back and forth to promote more digestion and absorption (A) Signup and view all the answers

What is the function of the lingual frenulum?

To hold the tongue in place (A) Signup and view all the answers

What is the purpose of saliva containing IgA?

To make saliva antimicrobial (B) Signup and view all the answers

What is the function of the epiglottis in the pharynx?

To stop food from going into the trachea and causing choking and suffocation (C) Signup and view all the answers

What is the purpose of the upper and lower esophageal sphincters?

To separate the esophagus from the pharynx and stomach (A) Signup and view all the answers

What is the function of the medulla oblongata in the swallowing process?

To control the automatic muscular contractions of deglutition (B) Signup and view all the answers

What is the relationship between body weight and stomach size?

Body weight does not correlate to stomach size (D) Signup and view all the answers

What are the two main categories of the digestive system?

Alimentary canal and accessory organs (D) Signup and view all the answers

Which layer of the alimentary canal replenishes itself every 3-7 days?

Mucosa (A) Signup and view all the answers

What is the function of the muscularis mucosa?

Increases surface area of the stomach and small intestines (C) Signup and view all the answers

Which of the following is NOT an accessory organ of the digestive system?

Pharynx (C) Signup and view all the answers

What is the primary function of the muscularis layer?

Promotes mechanical digestion (B) Signup and view all the answers

What type of muscle is found at both ends of the alimentary canal?

Skeletal muscle (D) Signup and view all the answers

What is the main function of the ileocecal sphincter?

To relax and allow chyme to enter the large intestine (A) Signup and view all the answers

How long does it typically take for chyme to leave the intestine?

3-5 hours (D) Signup and view all the answers

What is the main function of the large intestine?

To synthesize vitamins and create feces for elimination (B) Signup and view all the answers

What is the function of the appendix in the digestive system?

It is found at the start of the large intestine (A) Signup and view all the answers

What is the main function of the hepatic portal vein?

To bring digested and absorbed food to the liver (D) Signup and view all the answers

What is the role of bile in the digestive system?

To emulsify large lipids for better digestion and absorption (A) Signup and view all the answers

What is the main function of pancreatic amylase?

To convert disaccharides and polysaccharides into monosaccharides (D) Signup and view all the answers

What is the role of the Valsalva maneuver in the digestive system?

It is a voluntary contraction that helps push out feces (A) Signup and view all the answers

What is the main function of the hepatic sinusoid in the liver?

To allow hepatocytes access to the blood for processing nutrients and waste (B) Signup and view all the answers

What is the role of the parasympathetic nervous system in regulating the pancreas?

It stimulates the pancreas to secrete digestive enzymes (B) Signup and view all the answers

What is the function of the pyloric sphincter?

To control the movement of food from the stomach to the duodenum (C) Signup and view all the answers

What is the main function of parietal cells in the stomach?

To secrete hydrochloric acid and intrinsic factor (D) Signup and view all the answers

What is the purpose of the mucosal barrier in the stomach?

To protect the stomach lining from being digested by gastric juices (A) Signup and view all the answers

Which part of the small intestine is the longest?

Ileum (C) Signup and view all the answers

What is the function of villi in the small intestine?

To increase the surface area for absorption (A) Signup and view all the answers

What is the role of the ileocecal sphincter?

To control the movement of chyme from the small intestine to the large intestine (C) Signup and view all the answers

Which hormone is responsible for stopping segmentation and initiating peristalsis in the small intestine?

Motilin (B) Signup and view all the answers

What is the primary function of circular folds in the small intestine?

To slow down the movement of chyme for better absorption (A) Signup and view all the answers

Which type of cells in the stomach secrete an acidic mucus different from that secreted by goblet cells?

Mucus neck cells (B) Signup and view all the answers

What is the primary function of the small intestine?

To absorb nutrients and water (D) Signup and view all the answers

Digestive System Overview

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Questions and Answers

What is the function of the myenteric plexus in the muscularis?

What is the purpose of the hepatic portal system?

What is the difference between propulsion and peristalsis?

What is the purpose of segmentation in the small intestine?

What is the function of the lingual frenulum?

What is the purpose of saliva containing IgA?

What is the function of the epiglottis in the pharynx?

What is the purpose of the upper and lower esophageal sphincters?

What is the function of the medulla oblongata in the swallowing process?

What is the relationship between body weight and stomach size?

What are the two main categories of the digestive system?

Which layer of the alimentary canal replenishes itself every 3-7 days?

What is the function of the muscularis mucosa?

Which of the following is NOT an accessory organ of the digestive system?

What is the primary function of the muscularis layer?

What type of muscle is found at both ends of the alimentary canal?

What is the main function of the ileocecal sphincter?

How long does it typically take for chyme to leave the intestine?

What is the main function of the large intestine?

What is the function of the appendix in the digestive system?

What is the main function of the hepatic portal vein?

What is the role of bile in the digestive system?

What is the main function of pancreatic amylase?

What is the role of the Valsalva maneuver in the digestive system?

What is the main function of the hepatic sinusoid in the liver?

What is the role of the parasympathetic nervous system in regulating the pancreas?

What is the function of the pyloric sphincter?

What is the main function of parietal cells in the stomach?

What is the purpose of the mucosal barrier in the stomach?

Which part of the small intestine is the longest?

What is the function of villi in the small intestine?

What is the role of the ileocecal sphincter?

Which hormone is responsible for stopping segmentation and initiating peristalsis in the small intestine?

What is the primary function of circular folds in the small intestine?

Which type of cells in the stomach secrete an acidic mucus different from that secreted by goblet cells?

What is the primary function of the small intestine?

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