Cranial nerves - general

Question 1

How many cranial nerves are there ?

Answer 1

12

Question 2

What makes up the central nervous system

Answer 2

Brain and spinal cord

Question 3

Are cranial nerves paired or unpaired

Answer 3

Paired

Question 4

Where do cranial nerves originate from

Answer 4

The brain stem - ventral surface

Question 5

What direction do cranial nerves run in

Answer 5

Cranio caudal direction

Question 6

Which cranial nerves are not true nerves

Answer 6

Cranial nerves I and II

Question 7

What is somatic function

Answer 7

Voluntary activities

Question 8

What does afferent mean

Answer 8

Sensory

Question 9

What does efferent mean

Answer 9

Motor

Question 10

What does the somatic nervous system do

Answer 10

Transmits sensory and motor signals to and from the central nervous system

Question 11

What does the autonomic nervous system do

Answer 11

Controls the function of our organs and glands. Can be divided into parasympathetic and sympathetic divisions

Question 12

What does the parasympathetic nervous system do

Answer 12

Slows and relaxes the body, inhibits or slows many high energy functions

Question 13

What do cranial nerves carry (what types of fibres)

Answer 13

Parasympathetic autonomic fibres only

Question 14

Cranial nerve I

Answer 14

Olfactory - smell

Question 15

Cranial nerve II

Answer 15

Optic - vision - visual signals from the retina

Question 16

Cranial nerve III

Answer 16

Oculomotor - motor to ocular muscles (only some)

Question 17

Cranial nerve IV

Answer 17

Trochlear - Motor to Superior Oblique muscle - S04

Question 18

Cranial nerve V

Answer 18

Trigeminal - has 3 divisions ophthalmic, maxillary, mandibular. Sensation from face/ oral cavity, motor to muscles of mastication

Question 19

Cranial nerve VI

Answer 19

Abducens - Motor to lateral rectus muscle - LR6

Question 20

Cranial nerve VII

Answer 20

Facial - motor to muscles of facial expression

Question 21

Cranial nerve VIII

Answer 21

Vestibulocochlear - Hearing and balance

Question 22

Cranial nerve IX

Answer 22

Glossopharyngeal - Special sensory to posterior 1/3 of the tongue, innervates the carotid gland for saliva

Question 23

Cranial nerve X

Answer 23

Vagus - Controls laryngeal and pharyngeal muscles

Question 24

Cranial nerve XI

Answer 24

Accessory - Motor to sternocleidomastoid and trapezius muscles

Question 25

Cranial nerve XII

Answer 25

Hypoglossal - Motor to muscles of the tongue

Question 26

Which nerve is the longest

Answer 26

Vagus

Question 27

Which cranial nerve arises from the pons

Answer 27

Trigeminal

Question 28

Where does the olfactory nerve exit

Answer 28

The cribriform plate

Question 29

Where does the optic nerve exit

Answer 29

Optic canal

Question 30

Where does the oculomotor nerve exit

Answer 30

Superior orbital fissure

Question 31

Where does the trochlear nerve exit

Answer 31

Superior orbital fissure

Question 32

Where does the trigeminal nerve exit

Answer 32

V1- Superior orbital fissure V2- Foramen rotundum V3- Foramen ovale

Question 33

Where does the abducens nerve exit

Answer 33

Superior orbital fissure

Question 34

Where does the facial nerve exit

Answer 34

Internal acoustic meatus

Question 35

Where does the vestibulocochlear nerve exit

Answer 35

Internal acoustic meatus

Question 36

Where does the glossopharyngeal nerve exit

Answer 36

Jugular foramen

Question 37

Where does the vagus nerve exit

Answer 37

Jugular foramen

Question 38

Where does the accessory nerve exit

Answer 38

Jugular foramen

Question 39

Where does the hypoglossal nerve exit

Answer 39

Hypoglossal canal