‰pŒκ‚Εˆέ‚ΝEEEH  
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γ‚©‚ηEEE
Oesophagus @H“Ή
Oesophageal H“ΉŠ‡–ρ‹Ψi•¬–εj
stomach@ˆέ
Pyloric sphincter —H–εŠ‡–ρ‹Ψ
Duodenum \“ρŽw’°