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Questions and Answers
What is the primary mechanism by which the rate of mucus secretion in the large intestine is regulated?
What is the primary mechanism by which the rate of mucus secretion in the large intestine is regulated?
- Hormonal stimulation from the pituitary gland
- Sympathetic innervation from the spinal cord
- Direct, tactile stimulation of the epithelial cells (correct)
- Increased blood flow to the large intestine
What is the function of mucus in the large intestine?
What is the function of mucus in the large intestine?
- It absorbs water and electrolytes
- It protects the intestinal wall and holds fecal matter together (correct)
- It facilitates the digestion of nutrients
- It regulates the motility of the colon
What type of innervation can cause a marked increase in mucus secretion in the large intestine?
What type of innervation can cause a marked increase in mucus secretion in the large intestine?
- Parasympathetic innervation (correct)
- Enteric innervation
- Sympathetic innervation
- Somatic innervation
What is the effect of extreme parasympathetic stimulation on the large intestine?
What is the effect of extreme parasympathetic stimulation on the large intestine?
What is the location of the mucous cells in the large intestine?
What is the location of the mucous cells in the large intestine?
What is the effect of increased mucus secretion on the large intestine?
What is the effect of increased mucus secretion on the large intestine?
What stimulates the secretion of Brunner's glands?
What stimulates the secretion of Brunner's glands?
What is the primary function of the mucus secreted by Brunner's glands?
What is the primary function of the mucus secreted by Brunner's glands?
What type of stimulation inhibits the secretion of Brunner's glands?
What type of stimulation inhibits the secretion of Brunner's glands?
What is the function of the bicarbonate ions in the mucus secreted by Brunner's glands?
What is the function of the bicarbonate ions in the mucus secreted by Brunner's glands?
Where are the crypts of Lieberkühn located?
Where are the crypts of Lieberkühn located?
What is the relationship between the parasympathetic nervous system and the secretion of Brunner's glands?
What is the relationship between the parasympathetic nervous system and the secretion of Brunner's glands?
What is the primary function of the small intestine?
What is the primary function of the small intestine?
What is the main role of goblet cells in the intestinal epithelium?
What is the main role of goblet cells in the intestinal epithelium?
What is the pH of the intestinal secretions produced by the enterocytes?
What is the pH of the intestinal secretions produced by the enterocytes?
What is the mechanism by which water is moved into the intestinal secretions?
What is the mechanism by which water is moved into the intestinal secretions?
What is the daily rate of intestinal secretions produced by the enterocytes?
What is the daily rate of intestinal secretions produced by the enterocytes?
What is the role of the villi in the small intestine?
What is the role of the villi in the small intestine?
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