Podcast
Questions and Answers
Which of the following is the primary function of the pyloric sphincter?
Which of the following is the primary function of the pyloric sphincter?
- Absorbing water and electrolytes from the chyme.
- Controlling the release of chyme into the duodenum. (correct)
- Producing intrinsic factor for vitamin B12 absorption.
- Secreting hydrochloric acid into the stomach.
If parietal cells in the stomach were completely non-functional, what direct effect would this have on digestion?
If parietal cells in the stomach were completely non-functional, what direct effect would this have on digestion?
- Reduced carbohydrate breakdown in the small intestine.
- Decreased absorption of lipids due to lack of bile production.
- Impaired protein digestion due to the inactivation of pepsinogen. (correct)
- Inability to emulsify fats entering the duodenum.
A patient has undergone a partial gastrectomy involving removal of the stomach's body. Which function would be MOST affected?
A patient has undergone a partial gastrectomy involving removal of the stomach's body. Which function would be MOST affected?
- Secretion of mucus to protect the stomach lining.
- Initial storage of ingested food before digestion.
- Mixing of food with gastric secretions for chyme production. (correct)
- Regulation of gastric emptying via the pyloric sphincter.
Which layer of the stomach wall is primarily responsible for the mechanical breakdown of food through peristaltic contractions?
Which layer of the stomach wall is primarily responsible for the mechanical breakdown of food through peristaltic contractions?
A drug that inhibits the action of enteroendocrine cells in the stomach would MOST directly affect which process?
A drug that inhibits the action of enteroendocrine cells in the stomach would MOST directly affect which process?
Why is the small intestine, rather than the stomach, the primary site for nutrient absorption?
Why is the small intestine, rather than the stomach, the primary site for nutrient absorption?
What is the MOST significant consequence of removing the ileum from the small intestine?
What is the MOST significant consequence of removing the ileum from the small intestine?
How do segmentation contractions contribute to the digestive process in the small intestine?
How do segmentation contractions contribute to the digestive process in the small intestine?
Which structural feature is unique to the large intestine compared to the small intestine?
Which structural feature is unique to the large intestine compared to the small intestine?
What would be the PRIMARY effect of inhibiting the gut microbiota in the large intestine?
What would be the PRIMARY effect of inhibiting the gut microbiota in the large intestine?
If the teniae coli of the large intestine were to lose their contractile ability, which process would be MOST directly affected?
If the teniae coli of the large intestine were to lose their contractile ability, which process would be MOST directly affected?
What is the function of the internal anal sphincter, and what type of muscle controls it?
What is the function of the internal anal sphincter, and what type of muscle controls it?
What physiological response is triggered when fecal matter stretches the rectal walls, initiating the defecation reflex?
What physiological response is triggered when fecal matter stretches the rectal walls, initiating the defecation reflex?
A patient reports experiencing frequent, painful haustral contractions. Which section of the digestive tract is likely affected?
A patient reports experiencing frequent, painful haustral contractions. Which section of the digestive tract is likely affected?
Which of the following describes the correct order in which chyme passes through the segments of the colon?
Which of the following describes the correct order in which chyme passes through the segments of the colon?
Flashcards
Stomach
Stomach
J-shaped organ that stores food, mixes it with gastric secretions, and controls chyme release into the small intestine.
Gastric Mucosa
Gastric Mucosa
Innermost layer of the stomach wall containing cells that secrete mucus, acid, enzymes, and hormones.
Parietal Cells
Parietal Cells
Cells that secrete hydrochloric acid (HCl) and intrinsic factor in the stomach.
Pepsin
Pepsin
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Pylorus
Pylorus
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Duodenum
Duodenum
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Jejunum
Jejunum
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Villi
Villi
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Segmentation
Segmentation
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Large Intestine
Large Intestine
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Haustra
Haustra
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Teniae Coli
Teniae Coli
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Defecation
Defecation
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Rectum
Rectum
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Internal Anal Sphincter
Internal Anal Sphincter
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Study Notes
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