词根词缀：rachio-, rachi-, rach-, rachis-, rhach-, rhachi-, rhachio-

【来源及含义】Greek > Latin: spine, backbone

【同源单词】rachial, rachialgia, rachianalgesia, rachianesthesia, rachicentesis, rachidial

词根词缀：spin-, spino-, spini-

【来源及含义】Latin: thorn, prickle; by extension, "backbone", the spinal cord

【同源单词】anospinal, anterospinal, cerebrospinal, cervicispinal, costispinal, dorsispinal