Topic
5 claims checked
Claim:
Most digestive enzymes produced by the small-intestinal wall are bound to the apical (brush-border) cell membrane of intestinal epithelial cells rather than being freely secreted into the intestinal lumen.
NOT BS
Claim:
Under normal conditions, only a very small fraction of dietary amino acids in the small-intestinal lumen are diverted by other substances or are consumed by colonic bacteria before being absorbed, so amino-acid loss is very low.
HARDLY BS
Claim:
Most intestinal juice in the small intestine comes from the contents released when small-intestinal epithelial cells rupture and slough off, rather than from fluid actively secreted by intestinal glands.
TOTAL BS
Claim:
After proteases finish digesting food in the duodenum, they move with chyme into the mid and distal small intestine and begin digesting themselves and other enzymes into amino acids.
MOSTLY BS
Claim:
Reduced perfusion of the small-intestinal mucosa can impair enterocyte renewal and contribute to villous blunting (villous atrophy), reducing absorptive surface area.
NOT BS