檢視主动脉弓的原始碼

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| style="background: #008080" align= center|  '''<big>主动脉弓</big> '''

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[[File:U=1318860009,1825898265&fm=26&gp=0.jpg|缩略图|居中|[https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1607662352238&di=7344852c983eca14f176c43fbc6823a0&imgtype=0&src=http%3A%2F%2F5b0988e595225.cdn.sohucs.com%2Fimages%2F20190918%2F07ac7e0c7e544e11abb9b89f1f72cb3b.jpeg 原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E4%B8%BB%E5%8A%A8%E8%84%89%E5%BC%93&step_word=&hs=0&pn=28&spn=0&di=40260&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=1318860009%2C1825898265&os=2375804559%2C3267627175&simid=3528439278%2C393842065&adpicid=0&lpn=0&ln=1415&fr=&fmq=1607652234559_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2F5b0988e595225.cdn.sohucs.com%2Fimages%2F20190918%2F07ac7e0c7e544e11abb9b89f1f72cb3b.jpeg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bf5i7_z%26e3Bv54AzdH3FwAzdH3Fn980c9809_mcmcnn&gsm=1d&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 来自 百度 的图片]]]

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主动脉弓为主动脉上部是弓形弯曲的部分。在第4胸椎下缘移行为降主动脉。从弓的凸侧发出3条较大的动脉，由右向左依次分为无名动脉、左颈总动脉和左锁骨下动脉。[[主动脉弓]]的前方为胸骨柄，其右后方有[[气管]]、食管等。主动脉弓内有压力感受器。具有调节[[血压]]的作用。主动脉弓下方有2～3个粟粒状小体，称主动脉球，为化学感受器。