Gastric And Intestinal Digestion Flashcards
(33 cards)
The esophagus has the ability to control what?
Peristaltic contractions
What species has an esophagus that is 2/3 striated and 1/3 smooth?
Monogastrics
What type of esophagus do ruminants have? Why?
Striated for more voluntary control
How many sphincters do ruminants posses?
3
The 4 parts of the stomach are
Esophageal, cardiac, fundic, pyloric
What is the ph of the stomach?
Around 2-3
3 functions of gastric digestion
Allow control of digesta into small intestine, hormone production, mixing
Gastric fluids include
Mucus, HCl
5 secretions in the gastric area:
HCl, mucus, pepsinogen, rennin, lipase
The cephalic phase is induced what by what type of reflex?
vagal reflex
A local reflex induces which phase?
Gastric phase
Duodenal distension stimulates what phase?
Intestinal phase
4 git hormones
Gastric, secretin, cholecystokinin, gastric inhibitory protein
What hormone is stimulated by food in the stomach?
Gastrin
What is the origin of secretin, CCK and GIP
Duodenum
What hormone has the ability to regulate appetite?
CCK
What hormone slows motility ?
Secretin
G- cells produce what hormone?
Gastrin
What hormone stimulates the pancreas to male enzymes?
Secretin
The small intestine is composed of?
Duodenum,jejunum, ileum
Why does pH increase towards cellular pH throughout the small intestine?
Because of the sodium bicarbonate added by the Pancreas into chyme
The mucosa, submucosa, muscularis, and serosa are components of what?
Intestinal wall
The mucosa contains what to help increase surface area
Villi and folds
The cells found in the villi are
Endocrine, Panneth, absorptive epithelial, and goblet
