Term
Vagus branches that give
# hepatic
# celiac |
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Definition
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Term
| Importance of Criminal nerve of Grassi |
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Definition
| Branch of R vagus which, if left undivided, can cause persistantly high acid levels post vagotomy |
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Term
| Cells that secrete pepsinogen and function |
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Definition
| Chief cells; converted to pepsin and initiates proteolysis |
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Term
| Cells responsible for acid secretion in stomach and 3 main stimulators for acid secretion |
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Definition
# parietal cells
# Gastrin, Histamine, Ach |
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Term
| Cells that secrete gastrin and location |
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Definition
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Term
| Gastrin stimulators and inhibitors |
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Definition
# Stimulated by amino acids and Ach
# inhibitied by H+ in the duodenum |
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Term
| Cells responsible for intrinsic factor secretion |
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Definition
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Term
| Mechanism of action of Ach and gastrin on parietal cells to produce H+ |
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Definition
| # active DAG and PIP which increase intracytoplasmic Ca which activates protein kinase C which increases HCl production |
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Term
| Stimulus for SST secretion |
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Definition
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Term
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Definition
# inhibits gastrin, insulin, secretin and Ach
# decreases biliary and pancreatic output |
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Term
| Effect of truncal vagotomy on digestion |
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Definition
# abolishes receptive relaxation
# increases liquid emptying
# only increases solids emptying when performed with an pyloryplasty
# decreases basal acid secretion |
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Term
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Definition
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Term
| Causes of dumping syndrome and management |
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Definition
# early: high osmotic load causing a fluid shift
# late: increased insulin outpoint with decrease glucose
# most dumping responds to dietary measures |
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Term
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Definition
# increase GB constraction
# relax sphincter of Oddi
# increase pancreatic enzyme secretion |
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Term
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Definition
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Term
| function of secretin and where it is secreted |
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Definition
# increase pancreatic bicarb secretion
# secreted by S cells of the duodenum |
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Term
| Cells that secrete SST and location |
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Definition
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Term
| Source of enterglucagon and function |
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Definition
# secreted from hypertrophied small bowel
# adaptation after bowel resection |
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Term
| Source, stimulus and function of peptide YY |
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Definition
# released from terminal ileum in response to mixed meal
# inhibits acid secretion
# ileal break |
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Term
| Composition of bile and ways that stones form |
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Definition
# 80% bile salts, 15% lecithin, 5% cholesterol
# stones form when chol concentration goes up or bile salts or lecithin goes down |
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Term
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Definition
| # actively absorbes NaCl, H2O follows |
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Term
| Enterohepatic circulation |
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Definition
# 5g of bile circulates q4h
# lose 0.5g daily |
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Term
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Definition
# cholic acid
# chenodeoxycholic acid |
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Term
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Definition
# deoxycholic
# lithocholic acid |
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Term
| Length, stages and regulator of interdigestive motility |
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Definition
# 90-min cycles (from stomach to TI)
# phase I: quiescence
# phase II: GB contraction
# phase III peristalsis
# subsiding electric activity
# motilin regulates |
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Term
| Location and method of NaCl absorption in gut |
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Definition
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