Final answer:
The oculomotor nerve has subnuclei that are linked bilaterally, including the nucleus of the oculomotor nerve and the accessory oculomotor nucleus.
Step-by-step explanation:
The oculomotor nerve, also known as cranial nerve III, has multiple subnuclei that are linked bilaterally. These subnuclei include:
- The nucleus of the oculomotor nerve: This is responsible for controlling most of the extraocular muscles, including the superior rectus, medial rectus, inferior rectus, and inferior oblique muscles.
- The accessory oculomotor nucleus: This controls the extraocular muscles involved in eyelid elevation, specifically the levator palpebrae superioris muscle.
Both of these subnuclei are connected to the brainstem, allowing for coordinated eye movements.