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by BlastRoom
How villi and microvilli work, and where each nutrient class crosses into the body.
#us_hs_anatomy_physiology
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Fingerlike projections in the small intestine lining increase contact with chyme. What are these projections called?
Each absorptive epithelial cell has tiny projections that form a dense brush border on its free surface. What are the individual projections called?
The inner layer facing chyme creates the small intestine’s folds and projections. Which wall layer is it?
A broad ringlike ridge in the small intestine wall slows chyme and expands the lining. Which surface feature is it?
The free surface of intestinal epithelial cells looks fuzzy because of many tiny projections. What name is given to that apical surface?
After lining cells rebuild fatty acids and glycerol into chylomicrons, they leave a villus through which central vessel?
Monosaccharides absorbed from chyme enter which thin-walled vessel inside a villus before going to the liver?
Amino acids taken up by epithelial cells pass next into which vessel network of the villus?
Fat-soluble vitamins absorbed with dietary lipids enter which villus vessel first?
Water-soluble vitamins such as vitamin C leave the intestinal lining through which vessel type in a villus?
Calcium and iron ions absorbed across epithelial cells enter which vessel of the villus?
Most absorbed water from chyme enters which villus vessel rather than lymph?
Glucose moves from the lumen into epithelial cells with sodium using a carrier and cellular energy when lumen concentration is low. Which process is this?
Fructose crosses an epithelial cell through a carrier from high to low concentration without ATP. Which process is this?
Some short-chain fatty acids dissolve through the lipid part of the plasma membrane down a concentration gradient. Which process moves them?
Water moves across the intestinal epithelium toward the side with higher solute concentration. Which process is this?
In celiac disease, fingerlike projections in the small intestine flatten. What consequence follows?
If the brush border is badly worn down, what happens to nutrient uptake?
A disease destroys villi in the duodenum but spares the rest of the small intestine. Which mineral is most likely to become deficient?
If lacteals in damaged villi cannot receive chylomicrons normally, which consequence follows?
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Digestive Disorders
20 questions
