Podcast
Questions and Answers
Which motor function of the GI tract is responsible for the grinding and mixing of food with gastric secretions?
Which motor function of the GI tract is responsible for the grinding and mixing of food with gastric secretions?
Which sphincter is responsible for preventing gastric reflux by closing to keep the contents in the stomach until they are ready to be moved to the small intestine?
Which sphincter is responsible for preventing gastric reflux by closing to keep the contents in the stomach until they are ready to be moved to the small intestine?
What is the main hormonal signal that stimulates the migrating motor complex (MMC) in the small intestine?
What is the main hormonal signal that stimulates the migrating motor complex (MMC) in the small intestine?
Which structure regulates the passage of food from the small intestine to the colon and prevents backflow?
Which structure regulates the passage of food from the small intestine to the colon and prevents backflow?
Signup and view all the answers
What is the primary function of haustra in the colon?
What is the primary function of haustra in the colon?
Signup and view all the answers
Which regulatory mechanism controls the relaxation of the internal anal sphincter during defecation?
Which regulatory mechanism controls the relaxation of the internal anal sphincter during defecation?
Signup and view all the answers
What is the main function of the colon related to the absorption of water and electrolytes?
What is the main function of the colon related to the absorption of water and electrolytes?
Signup and view all the answers
What are haustrations in the large intestine primarily responsible for?
What are haustrations in the large intestine primarily responsible for?
Signup and view all the answers
Which reflex is responsible for stimulating mass movements pushing feces into the rectum?
Which reflex is responsible for stimulating mass movements pushing feces into the rectum?
Signup and view all the answers
What controls the external anal sphincter, which is a striated voluntary muscle?
What controls the external anal sphincter, which is a striated voluntary muscle?
Signup and view all the answers
What happens to newborns and individuals with transected spinal cords in relation to control of the external anal sphincter?
What happens to newborns and individuals with transected spinal cords in relation to control of the external anal sphincter?
Signup and view all the answers
What can lead to severe constipation according to the text?
What can lead to severe constipation according to the text?
Signup and view all the answers
What is the function of churning in the GI tract?
What is the function of churning in the GI tract?
Signup and view all the answers
Which sphincter coordinates with the exocrine secretions of the pancreas and liver?
Which sphincter coordinates with the exocrine secretions of the pancreas and liver?
Signup and view all the answers
How long does it take for food to travel through the small intestine?
How long does it take for food to travel through the small intestine?
Signup and view all the answers
What is the role of the gallbladder in the digestive process?
What is the role of the gallbladder in the digestive process?
Signup and view all the answers
Which part of the GI tract is responsible for significant absorption of nutrients?
Which part of the GI tract is responsible for significant absorption of nutrients?
Signup and view all the answers
What is the main function of propulsion in the GI tract?
What is the main function of propulsion in the GI tract?
Signup and view all the answers
What is the main function of ileocecal and anal sphincters?
What is the main function of ileocecal and anal sphincters?
Signup and view all the answers
How do proximal stimuli affect sphincteric muscles?
How do proximal stimuli affect sphincteric muscles?
Signup and view all the answers
Why is chewing (mastication) important in the digestive process?
Why is chewing (mastication) important in the digestive process?
Signup and view all the answers
What physiological response does a food bolus in the mouth trigger during chewing?
What physiological response does a food bolus in the mouth trigger during chewing?
Signup and view all the answers
How many times is a food bolus typically chewed before passing through the esophagus without pain?
How many times is a food bolus typically chewed before passing through the esophagus without pain?
Signup and view all the answers
What happens as food moves through the pharynx and upper esophagus during swallowing?
What happens as food moves through the pharynx and upper esophagus during swallowing?
Signup and view all the answers
What is the primary cause of failure of the Lower Esophageal Sphincter (LES) to relax in patients with Achalasia?
What is the primary cause of failure of the Lower Esophageal Sphincter (LES) to relax in patients with Achalasia?
Signup and view all the answers
Which neurotransmitter is responsible for causing relaxation in the Lower Esophageal Sphincter (LES)?
Which neurotransmitter is responsible for causing relaxation in the Lower Esophageal Sphincter (LES)?
Signup and view all the answers
What role does the Cricopharyngeus muscle play during the pharyngeal stage of deglutition?
What role does the Cricopharyngeus muscle play during the pharyngeal stage of deglutition?
Signup and view all the answers
Which condition poses a main risk for adenocarcinoma of the lower esophagus?
Which condition poses a main risk for adenocarcinoma of the lower esophagus?
Signup and view all the answers
In what way does Metoclopramide influence the Lower Esophageal Sphincter (LES)?
In what way does Metoclopramide influence the Lower Esophageal Sphincter (LES)?
Signup and view all the answers
What is the primary function of Barrier Pressure in preventing gastroesophageal reflux?
What is the primary function of Barrier Pressure in preventing gastroesophageal reflux?
Signup and view all the answers
