Tutorial title - Muscles
10 important questions on Tutorial title - Muscles
What are the functions of GI movements?
2. To retain ingesta at a given time for digestion, absorption, or storage via retentive motility (e.g. Sphincter contraction)
3. To break up food material physically and mix with digestive secretions
4. To circulate ingesta so that all portions come into contact with absorptive surfaces
What are the muscles of the GI system?
What determines the PATTERN of contraction?
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What determines whether contraction occurs or not?
What is the rate of the waves in the GI system from ICCs?
Where are contractions the strongest?
Why are contractions the strongest at the distal stomach?
Why are contractions the weakest at the proximal stomach?
What is the peristaltic reflex?
What is the mechanism of the peristatltic reflex?
2. Circular muscle contracts and longitudinal muscle relaxes
3. Stretch relaxes the circular muscle distal to bolus (NE, NO, VIP, ATP)
4. Longitudinal muscle contracts and circular muscle relaxes
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