Nervous system - Cranial Nerves

Question 1

What are cranial nerves?

Answer 1

Nerves that originate from the brain or brainstem

Question 2

How many cranial nerves are there?

Answer 2

12

Question 3

What do cranial nerves do?

Answer 3

Relay information to and from the body to the brain

Question 4

What is this cranial nerve?

Answer 4

Olfaction (sensory) nerve (CNI)

Question 5

What is this cranial nerve?

Answer 5

Optic (sensory) nerve (CNII)

Question 6

What is this cranial nerve?

Answer 6

Oculomotor nerve (CNIII)

Question 7

What is this cranial nerve?

Answer 7

Trochlear (motor) nerve (CNIV)

Question 8

What is this cranial nerve?

Answer 8

Trigeminal (motor and sensory) nerve (CNV)

Question 9

What is this cranial nerve?

Answer 9

Adducin’s (motor) nerve (CNVI)

Question 10

What is this cranial nerve?

Answer 10

Facial (sensory and motor) nerve (CNVII)

Question 11

What is this cranial nerve?

Answer 11

Vestibulocochlear (sensory) nerve (CNVIII)

Question 12

What is this cranial nerve?

Answer 12

Glossopharyngeal (sensory) nerve (CNIX)

Question 13

What is this cranial nerve?

Answer 13

Vagus (sensory and motor) nerve (CNX)

Question 14

What is this cranial nerve?

Answer 14

Accessory (motor) nerve (CNXI)

Question 15

What is this cranial nerve?

Answer 15

Hypoglossal (motor) nerve (CNXII)

Question 16

What are the functions of CN1 (Olfactory nerve)?

Answer 16

responsible for smell

Question 17

What are the functions of CN2 (optic nerve)?

Answer 17

responsible for vision

Question 18

What are the functions of CN3 (Oculomotor nerve)?

Answer 18

responsible for eye movements

Question 19

What are the functions of CN4 (trochlear nerve)?

Answer 19

responsible for eye movements

Question 20

What are the functions of CN5 (Trigeminal nerve)?

Answer 20

responsible for Partial face and tongue sensation and biting

Question 21

What are the functions of CN6 (Abducens nerve)?

Answer 21

responsible for eye movement

Question 22

What are the functions of CN7 (Facial nerve)?

Answer 22

responsible for taste, facial expression, saliva and tears

Question 23

What are the functions of V8 (Vestibulocochlear nerve)?

Answer 23

responsible for balance and hearing

Question 24

What are the functions of CN11 (Glossopharyngeal nerve)?

Answer 24

responsible for taste, tongue and pharynx sensation, swallowing and saliva

Question 25

What are the functions of CN10 (Vagus nerve)?

Answer 25

responsible for sensation in throat, larynx and pharynx, as well as mouth movements such as swallowing, speaking, and coughing

Question 26

What are the functions of CN11 (Accessory nerve)?

Answer 26

responsible for shoulder and head movements

Question 27

What are the functions of CN12 (Hypoglossal nerve)?

Answer 27

responsible for tongue movement

Question 28

What are the symptoms of damage to the glossopharyngeal nerve?

Answer 28

• Loss of taste from posterior 1/3 of tongue
• Trouble swallowing
• Decreased sensation at back of tongue, soft palate and pharynx
• diminished gag reflex and tongue and throat pain

Question 29

What are the symptoms of damage to the vagus nerve?

Answer 29

Hoarseness of voice
Difficulty swallowing and gagging
Abnormal heart rate and GI problems