Cranial Nerves

Question 1

Vagus nerve

Answer 1

• cranial nerve X
• motor and sensory
• smooth muscle sensory and motor control in throat, lungs, heart and digestive system

Question 2

Hypoglossal nerve

Answer 2

• cranial nerve XII
• motor
• movement of tongue, swallowing and speech

Question 3

Spinal accessory nerve

Answer 3

• cranial nerve XI
• motor
• movement of neck and shoulders

Question 4

Trochlear nerve

Answer 4

• cranial nerve IV
• motor
• eye movement- controls muscle that moves the eyeball down and our
• a lesion on this nerve can cause diplopia which can be improved by tilting the head away from the affected eye

Question 5

Trigeminal nerve

Answer 5

• cranial nerve V
• motor and sensory
• largest cranial nerve- divided into ophthalmic, maxillary and mandibular nerves
• functions controlled: facial sensation and chewing

Question 6

Abducens nerve

Answer 6

• cranial nerve VI
• motor
• eye movement- controls muscle that moves the eye away from the nose
• a lesion on this nerve causes diplopia

Question 7

Oculomotor nerve

Answer 7

• cranial nerve III
• motor
• eyeball and eyelid movement

Question 8

Optic nerve

Answer 8

• cranial nerve II
• sensory
• vision

Question 9

Olfactory nerve

Answer 9

• cranial nerve I
• sensory
• smell

Question 10

Auditory nerve

Answer 10

• cranial nerve VIII
• sensory
• equilibrium and hearing
• also called vestibulochlear nerve

Question 11

Glosspharyngeal nerve

Answer 11

• cranial nerve IX
• motor and sensory
• swallowing, sense of taste and saliva secretion

Question 12

Facial nerve

Answer 12

• cranial nerve VII
• motor and sensory
• facial expressions and sense of taste