IV.B.1 Head: Nasal & Orbital Region Page 4 of 6
Oculomotor CN III
| Step 5: View the oculomotor nerve. |
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The oculomotor nerve (CN III) leaves the brain stem between the midbrain and the pons. What is its relation to the Circle of Willis and the cavernous sinus? |
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The nerve passes through the circle of willis and the cavernous sinus. |
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What foramen does the oculomotor nerve pass through? |
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Superior orbital fissure |
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What muscles does oculomor nerve control? |
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Levator palpebrae superioris, superior rectus, inferior rectus, medial rectus, inferior oblique. |
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What parasympathetic functions does this nerve have? |
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Pupulary constriction and accommodation of the lens for near vision. The Ciliary ganglion will be discussed later in Week 3 Module 6 Page 3. |
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