Cranial Nerves Exam Questions Correctly Answered.

Cranial Nerves Exam Questions
Correctly Answered.

Cranial Nerves are - CORRECT ANSWER spinal nerves for your head



Cranial nerves carry.... - CORRECT ANSWER General Sensory (info from face and head to brain)



Motor Commands (from brain to face and head and guts)



Special sensory

(info from eyes, nose, ears and tongue)



How many pairs of cranial nerves? - CORRECT ANSWER 12



Cranial nerves serve the.... - CORRECT ANSWER head and neck



general motor and sensory functions, sensory functions



What are the 3 types of cranial nerves? - CORRECT ANSWER Sensory (carry somatic (touch) or special
sensory information



Motor (axons of somatic motor neurons)



Mixed (mixture of motor and sensory fibers)



CN I - CORRECT ANSWER Olfactory

Function: Smell

, CN II - CORRECT ANSWER Optic

Function: Vision & Visual Reflexes (blink to threat)



Rod cells: sensitive to white light and movement



Cone cells: provide color sensitivity



CN III - CORRECT ANSWER Oculomotor

Function: eye movement, upper eyelid elevation, pupil constriction/reflex



CN IV - CORRECT ANSWER Trochlear

Function: Downward and lateral (midline) eye movement, down and out



CN V - CORRECT ANSWER Trigeminal

Function: 3 Major branches

1) Ophthalmic (V1) Face sensation (sensory)

2) Maxillary (V2) Face sensation (sensory)



3) Mandibular (V3) motor innervation to muscles of mastication, face sensation (sensory/motor)



*Important for oral stage of swallowing: chewing, bolus sensation



CN VI - CORRECT ANSWER Abducens

Function: Lateral (away from midline) eye movement



CN VII - CORRECT ANSWER Facial

Function:

-Taste sensation (anterior 2/3 of tongue), -motor innervation to muscles of facial expression,
lacrimation, salivation