Cranial Foramina: Difference between revisions

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<table class="wikitable" style="width:80%"><tr>
<th width="123">Foramen</th>
<th width="284">Structures Conducted</th>
<th width="94">Cranial Fossa</th>
<th width="100">Cranial Bone</th>
</tr><tr>
<td width="123"><strong>Cribriform foramina in cribriform plate</strong></td>
<td width="284">
<ul>
<li>[[Olfactory Nerve|Olfactory nerve]]&nbsp;<em>(CN I)</em></li>
<li>Anterior ethmoidal nerves</li>
</ul>
</td>
<td width="94">Anterior cranial fossa</td>
<td width="100">Ethmoid bone</td>
</tr>
<tr>
<td width="123"><strong>Optic canal</strong></td>
<td width="284">
<ul>
<li>Optic nerve&nbsp;<em>(CN II)</em></li>
<li>Ophthalmic artery</li>
</ul>
</td>
<td width="94">Middle cranial fossa</td>
<td width="100">Sphenoid bone</td>
</tr>
<tr>
<td width="123"><strong>Superior orbital fissure</strong></td>
<td width="284">
<ul>
<li>Lacrimal nerve</li>
<li>Frontal nerve- branch of ophthalmic nerve of trigeminal nerve <em>(CN V)</em></li>
<li>Superior ophthalmic vein</li>
<li>Trochlear nerve <em>(CN IV)</em></li>
<li>Superior division of the [[Oculomotor Nerve|oculomotor nerve]] <em>(CN III)</em></li>
<li>Nasociliary nerve- branch of ophthalmic nerve <em>(CN V<sub>1</sub>) </em></li>
<li>Inferior division of the oculomotor nerve <em>(CN III)</em></li>
<li>Abducens nerve <em>(CN VI)</em></li>
<li>A branch of the Inferior ophthalmic vein</li>
</ul>
</td>
<td width="94">Middle cranial fossa</td>
<td width="100">Sphenoid bone</td>
</tr>
<tr>
<td width="123"><strong>Foramen rotundum</strong></td>
<td width="284">
<ul>
<li>&nbsp;Maxillary branch of trigeminal nerve <em>(CN V)</em></li>
</ul>
</td>
<td width="94">Middle cranial fossa</td>
<td width="100">Sphenoid bone</td>
</tr>
<tr>
<td width="123"><strong>Foramen ovale</strong></td>
<td width="284">
<ul>
<li>Mandibular branch of trigeminal nerve <em>(CN V)</em></li>
</ul>
</td>
<td width="94">Middle cranial fossa</td>
<td width="100">Sphenoid bone</td>
</tr>
<tr>
<td width="123"><strong>Foramen spinosum</strong></td>
<td width="284">
<ul>
<li>Middle meningeal artery</li>
<li>Middle meningeal vein</li>
<li>Meningeal branch of CN V<sub>3</sub></li>
</ul>
</td>
<td width="94">Middle cranial fossa</td>
<td width="100">Sphenoid bone</td>
</tr>
<tr>
<td width="123"><strong>[[Internal acoustic meatus]]</strong></td>
<td width="284">
<ul>
<li>[[Facial Nerve|Facial nerve]] <em style="font-size: 14px; font-family: inherit;">(CN VII)</em></li>
<li>Vestibulocochlear nerve <em>(CN VIII)</em></li>
<li>Vestibular ganglion</li>
<li>Labyrinthine artery</li>
</ul>
</td>
<td width="94">Middle cranial fossa</td>
<td width="100">Petrous part of temporal bone</td>
</tr>
<tr>
<td width="123"><strong>[[Jugular foramen]]</strong></td>
<td width="284">
<ul>
<li>Glossopharyngeal nerve <em>(CN IX)</em></li>
<li>Vagus nerve&nbsp;<em style="font-size: 14px; font-family: inherit;">(CN X)</em></li>
<li>Accessory nerve <em>(CN XI)</em></li>
<li>Jugular bulb</li>
<li>Inferior petrosal and sigmoid sinuses</li>
</ul>
</td>
<td width="94">Posterior cranial fossa</td>
<td width="100">Anterior aspect: Petrous portion of the temporal
<p>Posterior aspect: Occipital bone</p></td>
</tr>
<tr>
<td width="123"><strong>[[Hypoglossal canal]]</strong></td>
<td width="284">
<ul>
<li>Hypoglossal nerve&nbsp;<em>(CN XII)</em></li>
</ul>
</td>
<td width="94">Posterior cranial fossa</td>
<td width="100">Occipital bone</td>
</tr>
<tr>
<td width="123"><strong>Foramen magnum</strong></td>
<td width="284">
<ul>
<li>Vertebral arteries</li>
<li>Medulla and meninges</li>
<li>CN XI (spinal division)</li>
<li>Dural veins</li>
<li>Anterior and posterior spinal arteries</li>
</ul>
</td>
<td width="94">Posterior cranial fossa</td>
<td width="100">Occipital bone</td>
</tr></table>
[[Category:Neuroanatomy]]
[[Category:Neuroanatomy]]
[[Category:Skull Base]]

Latest revision as of 22:00, 3 March 2024

Foramen Structures Conducted Cranial Fossa Cranial Bone
Cribriform foramina in cribriform plate Anterior cranial fossa Ethmoid bone
Optic canal
  • Optic nerve (CN II)
  • Ophthalmic artery
 Middle cranial fossa Sphenoid bone
Superior orbital fissure
  • Lacrimal nerve
  • Frontal nerve- branch of ophthalmic nerve of trigeminal nerve (CN V)
  • Superior ophthalmic vein
  • Trochlear nerve (CN IV)
  • Superior division of the oculomotor nerve (CN III)
  • Nasociliary nerve- branch of ophthalmic nerve (CN V1)
  • Inferior division of the oculomotor nerve (CN III)
  • Abducens nerve (CN VI)
  • A branch of the Inferior ophthalmic vein
 Middle cranial fossa Sphenoid bone
Foramen rotundum
  •  Maxillary branch of trigeminal nerve (CN V)
 Middle cranial fossa Sphenoid bone
Foramen ovale
  • Mandibular branch of trigeminal nerve (CN V)
 Middle cranial fossa Sphenoid bone
Foramen spinosum
  • Middle meningeal artery
  • Middle meningeal vein
  • Meningeal branch of CN V3
 Middle cranial fossa Sphenoid bone
Internal acoustic meatus
  • Facial nerve (CN VII)
  • Vestibulocochlear nerve (CN VIII)
  • Vestibular ganglion
  • Labyrinthine artery
 Middle cranial fossa Petrous part of temporal bone
Jugular foramen
  • Glossopharyngeal nerve (CN IX)
  • Vagus nerve (CN X)
  • Accessory nerve (CN XI)
  • Jugular bulb
  • Inferior petrosal and sigmoid sinuses
 Posterior cranial fossa Anterior aspect: Petrous portion of the temporal

Posterior aspect: Occipital bone
Hypoglossal canal
  • Hypoglossal nerve (CN XII)
 Posterior cranial fossa Occipital bone
Foramen magnum
  • Vertebral arteries
  • Medulla and meninges
  • CN XI (spinal division)
  • Dural veins
  • Anterior and posterior spinal arteries
 Posterior cranial fossa Occipital bone
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