Oesophagus Flashcards
1
Q
what happens in peristalsis
A
contract above food and relaxes below the food bolus
2
Q
purpose of rugae
A
stretch when the stomach is full allowing it to expand
3
Q
what does the cardia and pyloric region do?
A
enter and leaving the stomach
4
Q
what does the body and fundus region do?
A
digestion going to take place
5
Q
what does the antrum do?
A
facilitate necessary function of stomach
6
Q
pH at epithelial cell vs in lumen
A
epithelia surface: 6-7
lumen: 1-2
7
Q
difference between peristalsis and segmentation
A
peristalsis
20% of stomach contractions, propels chime towards the colon, moving food from one side to another, ANS essential
segmentation
80% stomach contractions, weaker, fluid chime towards pyloric sphincter, food mixing, stretching activates enteric NS
