Cranial nerves

뇌신경(Cranial nerves)은 뇌로부터 나와 기관과 연결되는 12개 신경을 말한다

종류

1. Olfactory: Smell (only CN without thalamic relay to cortex) Sensory
2. Optic: Sight Sensory
3. Oculomotor: Eye movement (SR, IR, MR, IO), pupillary constriction(sphincter pupillae: Edinger-Westphal nucleus, muscarinic receptors), accommodation, eyelid opening (levator palpebrae) Motor
4. Trochlear: Eye movement (SO) Motor
5. Trigeminal: Mastication, facial sensation (ophthalmic, maxillary, mandibular divisions), somatosensation from anterior 2/3 of tongue Both
6. Abducens: Eye movement (LR) Motor
7. Facial: Facial movement, taste from anterior 2/3 of tongue, lacrimation, salivation (submandibular and sublingual glands), eyelid closing(orbicularis oculi), auditory volume modulation (stapedius) Both
8. Vestibulocochlear: Hearing, balance Sensory
9. Glossopharyngeal: Taste and sensation from posterior 1/3 of tongue, swallowing, salivation (parotid gland), monitoring carotid body and sinus chemo- and baroreceptors, and elevation of pharynx/larynx(stylopharyngeus) Both
10. Vagus: Taste from supraglottic region, swallowing, soft palate elevation, midline uvula, talking, coughing, parasympathetics to thoracoabdominal viscera, monitoring aortic arch chemo- and baroreceptors Both
11. Accessory: Head turning, shoulder shrugging (SCM, trapezius) Motor
12. Hypoglossal: Tongue movement Motor

특징

• 5, 7, 9, 10번은 모터와 센서 모두