Skull Base: Difference between revisions
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= Internal Features of Base of Skull = | |||
Divided into anterior, middle, and posterior cranial fossae | |||
= Anterior cranial fossa = | |||
* Contains frontal lobe of brain | |||
* Formed by frontal bone anteriorly, ethmoid bone medially, and lesser wing of sphenoid bone posteriorly | |||
== ''Features'' == | |||
* Frontal crest—midline bony extension of frontal bone | |||
* Foramen cecum—foramen at base of frontal crest | |||
* Crista galli—midline ridge of bone from ethmoid posterior to foramen cecum | |||
* Cribriform plate—thin, sievelike plate of bone on either side of crista galli, which transmits olfactory | |||
<div class="thumb tright"><div class="thumbinner" style="width:650px;"> | <div class="thumb tright"><div class="thumbinner" style="width:650px;"> | ||
<sketchfabplaylist>db0389b16b8043ffa3421f9c939c2be0+a624ecd01fe7476cb5f7b1740b6edde1+29ba2dc73685480386fb7271cd8d06ab+66909c98f7fe45948db0db574982fe9b+caf1e5fe161449e4a1324cdcb3156949</sketchfabplaylist> | <sketchfabplaylist>db0389b16b8043ffa3421f9c939c2be0+a624ecd01fe7476cb5f7b1740b6edde1+29ba2dc73685480386fb7271cd8d06ab+66909c98f7fe45948db0db574982fe9b+caf1e5fe161449e4a1324cdcb3156949</sketchfabplaylist> | ||
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* [[Cranial Foramina]] | * [[Cranial Foramina]] | ||
[[Category:Neuroanatomy]] | [[index.php?title=Category:Neuroanatomy]] | ||
Revision as of 19:58, 2 March 2024
Internal Features of Base of Skull
Divided into anterior, middle, and posterior cranial fossae
Anterior cranial fossa
- Contains frontal lobe of brain
- Formed by frontal bone anteriorly, ethmoid bone medially, and lesser wing of sphenoid bone posteriorly
Features
- Frontal crest—midline bony extension of frontal bone
- Foramen cecum—foramen at base of frontal crest
- Crista galli—midline ridge of bone from ethmoid posterior to foramen cecum
- Cribriform plate—thin, sievelike plate of bone on either side of crista galli, which transmits olfactory