檢視筛窦的原始碼

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| style="background: #008080" align= center|  '''<big>筛窦</big> '''

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[[File:U=1408743501,387178255&fm=26&gp=0.jpg|缩略图|居中|[https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1607054685793&di=f691ccdc519c8aadfb49026534b3340d&imgtype=0&src=http%3A%2F%2Ffjmingfeng.com%2Fimg%2F2%2F4292602851%2F62%2F5c6a9778b54a09919a09fc71a13d7595%2F4106575772%2F6435339613.jpg原图链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E7%AD%9B%E7%AA%A6&step_word=&hs=0&pn=2&spn=0&di=4510&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=1408743501%2C387178255&os=4202124637%2C3811360387&simid=3386320791%2C297482303&adpicid=0&lpn=0&ln=1042&fr=&fmq=1607044598138_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%2Fimg.yao51.com%2Fjiankangtuku%2Fgmknmnncgv.jpeg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fyw5c8_z%26e3Bv54AzdH3F3twghwg2p7h7AzdH3Fgvhg221e_z%26e3Bip4s&gsm=3&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 来自 百度 的图片]]]

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位于[[鼻腔]]外上方筛骨迷路内，由气化程度不同的含气小房构成，每侧有3-18个小的气房，气房的大小、排列及伸展范围极不规则，两侧极不对称。筛窦[[小房]]变异很大，但都有不同程度的发育。[[发育]]良好的筛窦，其气房可伸展入额窦底部、蝶窦上方或侧方、上颌窦后上方及额骨眶部等处，个别的还可通过鼻中隔到达对侧鼻腔或向上伸入[[鸡冠]]。