Open Question
How does each of the three phases of gastric secretion promote and facilitate gastric control?
23. The Digestive System
The Stomach
Back23. The Digestive System
The Stomach
- Multiple ChoicePepsin enzymatically digests __________.
- Open QuestionDescribe the regulation of the cephalic, gastric, and intestinal phases of gastric secretion.
- Multiple Choice
Proton Pump Inhibitors (or PPIs) are some of the widely used drugs in the world and are prescribed for chronic heartburn/acid reflux. They work by inhibiting the movement of H+ ions across the membrane into the gastric juice, thereby lowering the concentration of HCl. As described, which cell of the gastric glands would you expect PPIs to affect?
- Open QuestionMultiple ChoiceMore than one choice may apply.Where in the stomach do the strongest peristaltic waves occur?a. b. c. d.
- Multiple ChoiceThe only stomach function that is essential to life is __________.
- Open QuestionTrace the path of a single protein molecule that has been ingested. The protein molecule will be digested by enzymes made bya. the mouth, stomach, and colon,b. the stomach, liver, and small intestine,c. the small intestine, mouth, and liver,d. the pancreas, stomach, and small intestine.
- Open Question
A surgical procedure known as gastric bypass involves removing all or part of the stomach.
b. How would stomach removal affect absorption of vitamin B12? Explain.
- Multiple ChoiceWhich of the following products does the stomach produce?
- Open QuestionTroy Francis, a middle-aged salesman, complains of a burning pain in the 'pit of his stomach,' usually beginning about two hours after eating and abating after drinking a glass of milk. When asked to indicate the site, he points to his epigastric region. The GI tract is examined by X-ray fluoroscopy. A gastric ulcer is visualized, and drug therapy using a proton pump inhibitor and antibiotics is recommended.a. Why is this treatment suggested?b. What are the possible consequences of nontreatment?
- Multiple ChoiceThe phases of gastric secretion, from first to last, are __________.
- Open QuestionThe sphincter between the stomach and duodenum isa. the pyloric sphincter,b. the gastroesophageal sphincter,c. the hepatopancreatic sphincter,d. the ileocecal valve.
- Multiple Choice
Which area/structure is NOT a component of the pyloric part of the stomach?
- Multiple Choice
Which layer of the muscularis externa only exists in the stomach?
- Open QuestionMultiple ChoiceMore than one choice may apply.Match the letter of the digestive organ shown in the figure with its function. ___ churning occurs here