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筛骨
学习目标
完成本学习单元后，你将能够：
- 描述筛骨的位置。
- 识别筛骨的主要骨性标志。
- 列举与筛骨形成关节的 13 块骨骼。
浏览图谱
筛骨为一块体积小、质地薄脆的骨骼，位于颅前区中线处，居于颅前窝内、眼眶内侧，且在鼻腔稍偏上后方的位置。基于该位置特点，筛骨参与构成眼眶内侧壁、鼻中隔，同时也参与构成鼻腔顶壁和外侧壁。
筛骨属于含气骨，骨内布满含气小房（腔隙），其大小、形态和重量常被比作冰块。筛骨的形态结构复杂，拥有多个具特定命名的组成部分。
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筛窦
Ethmoidal cells
1/5
同义词：
无
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上鼻道
Superior nasal meatus
1/8
同义词：
无
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/lamina-cribrosa-5/RgEKpUHVkQvLULPUS2jFEw_Lamina_cribrosa_1.png "筛板 (Cribriform plate of ethmoid bone)；图像：Samantha Zimmerman"){kind=logo}
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筛板
Cribriform plate of ethmoid bone
1/5
同义词：
筛骨筛板
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:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/cellulae-ethmoidales-2/BcIKLmP4Uu1sOQjgQuhQQ_Cellulae_ethmoidales_1.png "筛窦 (Ethmoidal cells)；图像：Samantha Zimmerman"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/perpendicular-plate-of-ethmoid-bone-3/RSN6kxp72CWjApjhsP7A_Lamina_perpendicularis_1.png "筛骨垂直板 (Perpendicular plate of ethmoid bone)；图像：Samantha Zimmerman"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/crista-galli-8/2ju3UvF2XwwnU78rfwVMHA_Crista_galli_1.png "筛骨鸡冠 (Crista galli of ethmoid bone)；图像：Samantha Zimmerman"){kind=logo}
中鼻甲
Middle nasal concha of ethmoid bone
1/5
同义词：
无
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/crista-galli/nunxP3OjA9bkw9Q21j7i0Q_Crista_galli_01.png "筛骨鸡冠 (Crista galli of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/lamina-cribrosa/DoN2HAv0xtBQOyssthwcMw_Lamina_cribrosa_01.png "筛板 (Cribriform plate of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/crista-galli-2/fW6CjbHnMnF1Rhfg8MkJNg_Crista_galli_01.png "筛骨鸡冠 (Crista galli of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/lamina-cribrosa-2/2qnEDWHJ8EoDNL1xKTXZXA_Lamina_cribrosa_01.png "筛板 (Cribriform plate of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/lamina-orbitalis-os-ethmoidale/Vx3DPOubfILYg7F7BqPi5w_Orbital_plate_-_Ethmoid_Bone_01.png "筛骨眶板 (Orbital plate of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/lamina-perpendicularis-ossis-ethmoidalis/DYcKCG5gOCJCCbfcezSfg_Lamina_perpendicularis_ossis_ethmoidalis_01.png "筛骨垂直板 (Perpendicular plate of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/concha-nasalis-superior/5xqCvcWLPZ9UKnzIXiqqKQ_Concha_nasalis_superior_01.png "筛骨上鼻甲 (Superior nasal concha of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/meatus-nasi-superior/yA6bmV7J5JqK4JvAfaqmcQ_Meatus_nasi_superior_01.png "上鼻道 (Superior nasal meatus)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/concha-nasalis-media/t0cSGLhqjHLB8b9GlwtuUA_Concha_nasalis_media_01.png "中鼻甲 (Middle nasal concha of ethmoid bone)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/meatus-nasi-medius/G7WbFcqxdOhejoNw9sevQ_Meatus_nasi_medius_01.png "中鼻道 (Middle nasal meatus)；图像：Yousun Koh"){kind=logo}
筛骨鸡冠
Crista galli of ethmoid bone
1/10
同义词：
鸡冠
进行测验
学习上述图谱后，可通过以下测验巩固所学知识。
小结
| 位置 | 筛骨位于颅前窝内，眶的内侧，鼻腔的后上方 |
| 标志性结构 | 鸡冠、鸡冠翼、筛板、垂直板、筛迷路、筛小房、眶板、筛泡、钩突、最上鼻甲、上鼻甲、中鼻甲、筛漏斗 |
| 相连骨 | 额骨、蝶骨、鼻骨（2 块）、上颌骨（2 块）、泪骨（2 块）、腭骨（2 块）、下鼻甲（2 块）及犁骨 |
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