6.- Cells of the Small Intestine

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goblet cells secrete

secrete mucus

M cells function

Absorption of antigens to underlying lymphatic tissue

Enterocytes function

Absorption. Digestion

enteroendocrine cells secrete

CCK Secretin Gastric inhibitory peptide (GIP)

Paneth cells function

Digestion of bacterial cell walls

Cells of the Small Intestine

Enterocytes. Goblet cells. M cells. Paneth cells. Enteroendocrine (APUD) cells. mucosal cells.

Enterocytes location

Epithelium throughout small intestine

Goblet cells location

Epithelium throughout small intestine (mostly in ileum)

mucosal cells of small intestine secretion

HCO3−

Enteroendocrine (APUD) cells location

Intestinal crypts throughout small intestine (mostly in duodenum)

Paneth cells location

Intestinal glands throughout small intestine

Paneth cells secrete

Lysozyme

mucosal cells of small intestine function

Neutralizes intestinal pH

M cells secretion

None

Enterocytes secrete

None Glycoprotein enzymes

M cells location

Peyer's patches (ileum)

mucosal cells of small intestine location

Submucosal glands of Brunner (duodenum)

Enteroendocrine function

↑ pancreatic secretion ↑ increases bile secretion ↑ pancreatic HCO3− secretion ↓ gastric acid secretion


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