Podcast
Questions and Answers
What is the main function of GI motility?
What is the main function of GI motility?
- Breaking down complex molecules into simpler compounds
- Mixing and propelling ingested food for digestion and absorption (correct)
- Absorbing nutrients from the food
- Controlling the release of digestive enzymes
In which part of the GI tract does phasic contractions occur?
In which part of the GI tract does phasic contractions occur?
- Ileocecal sphincter
- Lower esophageal sphincter (correct)
- Large intestine
- Orad region of the stomach
What type of muscle is predominant in the contractile tissue of the GI tract?
What type of muscle is predominant in the contractile tissue of the GI tract?
- Striated muscle
- Skeletal muscle
- Unitary smooth muscle with gap junctions (correct)
- Circular smooth muscle
What is the primary function of mass movements in the GI tract?
What is the primary function of mass movements in the GI tract?
Which part of the GI tract exhibits tonic contractions?
Which part of the GI tract exhibits tonic contractions?
What is the role of circular smooth muscle in the GI tract?
What is the role of circular smooth muscle in the GI tract?
Which of the following describes a direct action that promotes the urge to defecate?
Which of the following describes a direct action that promotes the urge to defecate?
What is the primary function of segmentation contractions in the large intestine?
What is the primary function of segmentation contractions in the large intestine?
What triggers the urge to defecate once the rectum fills to 25% of its capacity?
What triggers the urge to defecate once the rectum fills to 25% of its capacity?
What is the main function of mass movements in the large intestine?
What is the main function of mass movements in the large intestine?
In which part of the gastrointestinal tract does water absorption occur, leading to semisolid and increasingly difficult to move fecal material?
In which part of the gastrointestinal tract does water absorption occur, leading to semisolid and increasingly difficult to move fecal material?
What prevents reflux from the cecum back into the small intestine?
What prevents reflux from the cecum back into the small intestine?
Which part of a meal triggers an urge to defecate?
Which part of a meal triggers an urge to defecate?
Which of the following is true about the function of sphincters in the gastrointestinal tract?
Which of the following is true about the function of sphincters in the gastrointestinal tract?
What is the primary factor determining the frequency of slow waves in the gastrointestinal tract?
What is the primary factor determining the frequency of slow waves in the gastrointestinal tract?
Which phase of swallowing involves the soft palate being pulled upward and the epiglottis covering the opening of the larynx?
Which phase of swallowing involves the soft palate being pulled upward and the epiglottis covering the opening of the larynx?
What controls the opening and closing of the lower esophageal sphincter during esophageal motility?
What controls the opening and closing of the lower esophageal sphincter during esophageal motility?
What is the primary function of the orad region of the stomach?
What is the primary function of the orad region of the stomach?
What regulates the frequency and force of gastric contractions during fasting?
What regulates the frequency and force of gastric contractions during fasting?
What is likely to inhibit gastric emptying?
What is likely to inhibit gastric emptying?
What stimulates peristalsis in small intestine motility?
What stimulates peristalsis in small intestine motility?
What triggers the release of motilin in the small intestine?
What triggers the release of motilin in the small intestine?
Which physiological process does vomiting involve?
Which physiological process does vomiting involve?
What is NOT a characteristic event during vomiting?
What is NOT a characteristic event during vomiting?
What happens to feces in the large intestine?
What happens to feces in the large intestine?
