Unformatted text preview: ic constipation common 5 15/02/2012 Secretion – Where? What? How?
Into the lumen…
From glands saliva from salivary glands, acid from gastric glands
From glands : saliva from salivary glands, acid from gastric glands
(stomach, bicarbonate from Brunner’s glands (small intestine),
pancreatic juice from the exocrine pancreas, bile from the liver
From individual cells in the epithelium: mucus secretion from
Goblet Cells, defensins from Paneth cells, secretory IgA from
specialized epithelial cells. But wait! Gut epithelial cells also secrete paracrine
messengers to neighboring cells via the extracellular
fluid in the tissue and secrete hormones to enter the
bloodstream and travel to distal sites!
* there is secretion happening in every direction: and it ranges in size/type
from massive movement of water and electrolytes to single hormone secretion 2, 500 ml of blood plasma
a lot Secretion – Bulk fluid
secretion and fluid flow
(24 hour) how much fluid should
we take in per day
at least the bare
minimum what form should we take in? urine most people wi...
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- Winter '11
- Digestive System, GI Tract, internal anal sphincter, peripheral clocks