Cranial nerves
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The cranial nervenerves are the 12 paired sets of nerves that arise from the brain or brainstem and leave the central nervous system through cranial foraminae rather than through the spine.
BrainCerebrum
The first and second cranial nerves derive from the telencephalon and diencephalon respectively. :
Midbrain
The third and fourth cranial nerves originate from the midbrain.:
Pons
The middle four cranial nerves originate from the pons.:
- trigeminal nerve (CN V)
- abducens nerve (CN VI)
- facial nerve (CN VII)
- vestibulocochlear nerve (CN VIII)
Medulla oblongata
The final four cranial nerves originate from the medulla oblongata.:
- glossopharyngeal nerve (CN IX)
- vagus nerve (CN X)
- accessory nerve (CN XI)
- hypoglossal nerve (CN XII)
In adults, the brainstem nuclei are located within the tegmentum, the posterior section of the brainstem (except in the midbrain where the quadrigeminal plate is most posterior).
-<p>The cranial nerve are the 12 paired sets of nerves that arise from the <a href="/articles/brain">brain</a> or <a href="/articles/brainstem">brainstem</a> and leave the <a href="/articles/central-nervous-system">central nervous system</a> through <a href="/articles/cranial-foramina">cranial foraminae</a> rather than through the spine. </p><h4><strong>Brain</strong></h4><p>The first and second cranial nerves derive from the telencephalon and <a href="/articles/diencephalon">diencephalon </a>respectively. </p><ul>- +<p>The <strong>cranial nerves</strong> are the 12 paired sets of nerves that arise from the <a href="/articles/brain">brain</a> or <a href="/articles/brainstem">brainstem</a> and leave the <a href="/articles/central-nervous-system">central nervous system</a> through <a href="/articles/cranial-foramina">cranial foraminae</a> rather than through the spine. </p><h4><strong>Cerebrum</strong></h4><p>The first and second cranial nerves derive from the <a title="telencephalon" href="/articles/telencephalon">telencephalon</a> and <a href="/articles/diencephalon">diencephalon </a>respectively:</p><ul>
-</ul><h4>Midbrain</h4><p>The third and fourth cranial nerves originate from the <a href="/articles/midbrain">midbrain</a>.</p><ul>- +</ul><h4>Midbrain</h4><p>The third and fourth cranial nerves originate from the <a href="/articles/midbrain">midbrain</a>:</p><ul>
-</ul><h4>Pons</h4><p>The middle four cranial nerves originate from the <a href="/articles/pons">pons</a>.</p><ul>- +</ul><h4>Pons</h4><p>The middle four cranial nerves originate from the <a href="/articles/pons">pons</a>:</p><ul>
-</ul><h4>Medulla oblongata</h4><p>The final four cranial nerves originate from the <a href="/articles/medulla-oblongata">medulla oblongata</a>.</p><ul>- +</ul><h4>Medulla oblongata</h4><p>The final four cranial nerves originate from the <a href="/articles/medulla-oblongata">medulla oblongata</a>:</p><ul>
-</ul><p>In adults, the brainstem nuclei are located within the <a href="/articles/tegmentum">tegmentum</a>, the posterior section of the brainstem (except in the midbrain where the quadrigeminal plate is most posterior).</p>- +</ul><p>In adults, the brainstem nuclei are located within the <a href="/articles/tegmentum">tegmentum</a>, the posterior section of the brainstem (except in the midbrain where the <a title="Quadrigeminal plate" href="/articles/quadrigeminal-plate">quadrigeminal plate</a> is most posterior).</p>
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