Neuroscience: Cranial Nerves VII-XII (Quiz)

Objectives: Identify/ Label CN VII-XII in a picture. Identify/ Label areas of the brain where sensory information is processed in a picture. Describe functions of CN VII-XII and lesions.

What is Cranial Nerve VII and its name, functions, and results of lesion?

• Name: Facial Nerve

• Function: muscles of facial expression

  • Salivation and taste

  • Tears

• Result of Lesion:

  • loss of blink reflex, ageusia (loss of taste)

  • pain behind ear

  • dry and red eyes

  • forehead can’t wrinkle

What is Cranial Nerve VIII and its name, function, and results of lesion?

• Name: Auditory or Vestibulocochlear Nerve

• Function: hearing and balancee

• Result of Lesion: hearing loss, balance loss, Nystagmus (eyes shake rapidly), and vertigo

What is Cranial Nerve IX and its name, function, and results of lesion?

• Name: Glossopharyngeal Nerve

• Function: sensation of posterior 1/3 of tongue

• Result of Lesion: loss of gag relfex

What is Cranial Nerve X and its name, function, and results of lesion?

• Name: Vagus Nerve

• Function: muscles for swallowing, larynx muscles (phonates), sensory of laryngopharynx, GI tract, muscles for food digestion, interviews uvula

• Results of Lesion: nasal speech, dysphagia (difficulty swallowing), hoarse voice, gag reflex loss, cough reflex loss

What is Cranial Nerve XI and its name, function, and results of lesion?

• Name: Accessory

• Function: muscles; sternocleidomastoid and trapezius

• Results of Lesion: shoulder droop and weakness turning chin to the opposite side

What is Cranial Nerve XII and its name, function, and results of lesion?

• Name: Hypoglossal Nerve

• Function: tongue movement

• Results of Lesion: tongue pointing toward same side and problems with speech and swallowing

Identify/Label where sensory info is processed:

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