Samenvattingen van de lessen over darm in beweging, slokdarmpathologie, Semiologie gastro, les radiologie. Alles staat duidelijk aangeduid wat je moet kennen.
Darm in Beweging
1. Dunne darm
Bezenuwing → zie les regeling en organisatie digestive tractus
Extrinsieke bezenuwing
● Parasympatisch
○ Nervus vagus (X) en plexus pelvinus
○ Acetylcholine (nicotine en muscarine receptoren)
○ Stimuleren motoriek
○ Relaxatie van de sfincters
→ maag darmstelsel laten werken
● Orthosympatisch
○ Splanchnische zenuwen en prevertebrale ganglia
○ (nor)adrenaline
○ Inhiberen motoriek
○ Contractie van de sfincters
→ maag darmstelsel laten rusten
, Peristaltiek
Regeling
→ de motiliteit wordt geregeld door de intestinale cellen van Cajal → zorgen voor de slow wave activiteit
→ de cellen van Cajal liggen tussen de zenuwuiteinden en glad spierweefsel
→ een contractie gebeurt als er piekjes zijn in de slow wave
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