Three constrictions 食管 3
个狭窄
第一狭窄:起始部 At its
beginning, 15cm from incisors,
lies at level of C6, is the
narrowest part of the esophagus
第二狭窄: 与左主支气管交叉处
Where it is crossed by left
main bronchus, 25cm from
incisors, lies at level of
intervertebral disc between T4
and T5.
第三狭窄:穿膈处 Where it
passes through the
esophageal hiatus of
diaphragm, 40cm from
incisors, at level of T10
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