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Cranial Nerves 3
Question | Answer |
---|---|
Cranial Nerve I – Olfactory | Sense of smell |
Cranial Nerve II – Optic | Vision -Transmits visual information to the brain |
Cranial Nerve III – Oculomotor | Most eye movements |
Cranial Nerve IV – Trochlear | More eye movements. Innervates the superior oblique muscle, which depresses, pulls laterally, and intorts the eyeball |
Cranial Nerve V – Trigeminal | Facial sensation- muscles of mastication |
Cranial Nerve VI – Abducens | More eye movements: Innervates the lateral rectus, which abducts the eye |
Cranial Nerve VII – Facial | Facial expression, taste from the anterior 2/3 of the tongue, Innervates salivary(except parotid) and lacrimal gland |
Cranial Nerve VIII - Vestibulocochlear (or auditory-vestibular) | Balance & movement)Senses sound, rotation and gravity |
Cranial Nerve IX – Glossopharyngeal | Taste from the posterior 1/3 of the tongue, secretomotor innervation to parotid gland, and provides motor innervation to the stylopharyngeus (essential for tactile, pain, and thermal sensation) |
Cranial Nerve X – Vagus | Branchiomotor innervation to most laryngeal/pharyngeal muscles; sense of taste from epiglottis. Controls muscles for voice and resonance. Symptoms of damage: dysphagia |
Cranial Nerve XI – Accessory | Controls muscles of the neck and overlaps with functions of the vagus. |
Cranial Nerve XII – Hypoglossal | Motor innervation to tongue and glossal muscles. Tongue movement. Important for swallowing (bolus formation) and speech. |