题目内容

以会聚学说和易化学说解释牵涉痛的主要依据是

A. 病区与放射部位源于相同胚胎节段和皮节
B. 体表局部麻醉不能取消剧烈的牵涉痛
C. 体表局部麻醉可消除轻微的牵涉痛
D. 脊髓后角存在调控痛觉传入的“闸门”
E. 感觉传入通路中存在辐散式联系

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