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13 Cards in this Set
- Front
- Back
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What type of meal empties the quickest?
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Liquid
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What is the Lag Phase of Emptying? What is its point?
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-There is a lag before anything leaves the stomach
-This is to allow for further breakdown of solids |
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How long does it take a normal meal to empty?
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3 Hours
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What are the 2 Types of Gastric Emptying? What determines which type we will see?
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-Rapid and Delayed
-The type of Meal |
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What part of the Stomach is responsible for Propulsion across the Pylorus?
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Antrum
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How is the emptying of the Stomach slowing down food?
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With a Lag Phase
-Pyloris is Closed |
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What happens during Delayed Gastric Empyting?
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-Includes a Specific Lag Phase
-Antral Pump is SEt into Motion and Pyorus is Closed -Pylorus maintains a high resistance and results in small or no Transpyloric Flow -Low Propulsion and Enhanced Retropulsion |
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What is the Pyloric Sphincter Tone controlled by?
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-Reflexes from the Antrum and Duodenum
-Hormones -ENS -ANS |
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What causes the Pyloris to Open?
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-Food arriving in and contraction ofthe Antrum
-Leads to an Inhibitory Reflex -Inhibits Pyloric Tone |
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Which NTs cause the Pyloris to Open?
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-NO (NANC)
-VIP |
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What type of Duodenal Stimuli Increase Pyloric Tone?
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H+ and Fatty Acids
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What does Distension of the STomach cause the Stomach to do?
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-Excitatory Reflex
-Stronger Contractions Result |
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What does Distension of the Antrum cause the Stomach to do?
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-Inhibitory Reflex
-Turns off Stronger Contraction from the Antrum - Prolonged Relxation -Prevents you from Dumping Food into the SI |
