CRANIAL NERVES 🧠2️⃣

oh my god

CN 1 Overview

Olfactory, Sensory, No UMN Innervation, leison causes Anosmia

CN II Overview

Optic, Sensory, No UMN Innervation, leison causes Monocular vision loss

CN III Overview

Oculomotor, Motor, Unrelated innveration, Lesion causes: Eye movement deficits

CN IV, 4, Overview

Trochlear, Motor, Unrelated innvervation, Lesion causes: Difficulty moving eye downward/inward

CN V, 5, Overview

Trigeminal, Both, Bilateral, Lesion causes: Facial sensory loss, impaired chewing

CN 6, VI Overview

Abducens, Motor, unrelated innervation, Lesion causes: Impaired eye abduction

CN 7, VII Overview

Facial, Both, Bilateral (upper face), Contralateral (lower face), Lesion causes: Facial sensory loss

CN 8, VIII Overview

vestibulocochlear, Sensory, No UMN innervation, Lesion causes: Hearing loss or balance disturbances

CN 9, IX Overview

Glossopharyngeal, Both, Bilateral, Lesion causes: Impaired swallowing

CN 10, X Overview

Vagus, Both, Bilateral, Lesion causes: Voice changes

CN 11, XI Overview

Accessory, Motor, Bilateral , Lesion causes: Weak shoulder elevation

CN 12, XII Overview

Hypoglossal, Motor, Contralateral, Lesion causes: Tongue weakness or deviation

CN X is useful for what function?

swallowing, voice

the end

!!!!!!!!!!!!!!