Cranial Nerves

Question 1

Cranial nerves are … that innervate muscles or glands, carry impulses from sensory receptors, or have a combination of motor and sensory fibers

Answer 1

bundles of sensory or motor fibers

Question 2

Cranial nerves are bundles of sensory or motor fibers that …., carry impulses from sensory receptors, or have a combination of motor and sensory fibers

Answer 2

innervate muscles or glands

Question 3

Cranial nerves are bundles of sensory or motor fibers that innervate muscles or glands, ..

Answer 3

carry impulses from sensory receptors, or have a combination of motor and sensory fibers

Question 4

How many pairs of cranial nerves are there?

Answer 4

12

Question 5

How are the cranial nerves numbered?

Answer 5

numbered I-XII, from rostral to caudal

Question 6

What do the names of the cranial nerves reflect?

Answer 6

reflect their general distribution or function.

Question 7

Each cranial nerve has…

Answer 7

central connections (nuclei of origin) within the brain and has peripheral connections.

Question 8

Cranial nerves emerge through …. in the cranium and are covered by tubular sheaths derived from the cranial meninges.

Answer 8

foramina or fissures

Question 9

Cranial nerves emerge through foramina or fissures in the _____ and are covered by tubular sheaths derived from the cranial meninges.

Answer 9

cranium

Question 10

Cranial nerves emerge through foramina or fissures in the cranium and are covered by …

Answer 10

tubular sheaths derived from the cranial meninges.

Question 11

Which foramina does CN I pass thru?

Answer 11

Cribriform foramina

Question 12

What does CN II pass thru?

Answer 12

Optic canal

Question 13

What passes thru superior orbital fissure?

Answer 13

CN III , IV, V1, VI

Question 14

What does CN V2 pass thru?

Answer 14

Foramen rotundum

Question 15

What does CN V3 pass thru?

Answer 15

Foramen ovale

Question 16

What passes thru the internal acoustic meatus?

Answer 16

CN VII, VIII

Question 17

What passes thru the jugular foramen?

Answer 17

CN IX X XI

Question 18

What does CN XII pass thru?

Answer 18

Hypoglossal canal

Question 19

CNI aka

Answer 19

Olfactory nerve

Question 20

CN II aka

Answer 20

Optic nerve

Question 21

CN III aka

Answer 21

Oculomotor nerve

Question 22

CN IV aka

Answer 22

Trochlear nerve

Question 23

CN V1 aka

Answer 23

Ophthalmic nerve

Question 24

CN VI aka

Answer 24

Abducent nerve

Question 25

CN V2 aka

Answer 25

Maxillary nerve

Question 26

CN V3 aka

Answer 26

Mandibular nerve

Question 27

CN VII aka

Answer 27

Facial nerve

Question 28

CN VIII aka

Answer 28

Vestibulocochlear nerve

Question 29

CN IX aka

Answer 29

Glossopharyngeal nerve

Question 30

CN X aka

Answer 30

Vagus nerve

Question 31

CN XI aka

Answer 31

Spinal accesory nerve

Question 32

CN XII aka

Answer 32

Hypoglossal nerve

Question 33

FUNCTIONAL COMPONENTS OF A CRANIAL NERVE

Answer 33

``` general somatic efferent general visceral efferent general somatic afferent general visceral afferent Fibers transmitting unique sensation ```

Question 34

general somatic efferent

Answer 34

Motor efferent fibers innervating voluntary muscles

Question 35

general visceral efferent

Answer 35

Motor efferent innervating involuntary smooth muscles or gland

Question 36

general somatic afferent

Answer 36

Sensory afferent fibers transmitting general sensation from skin and mucous membranes

Question 37

general visceral afferent

Answer 37

Sensory afferent fibers conveying sensation from the viscera

Question 38

Sensory afferent fibers conveying sensation from the viscera e.g ….

Answer 38

carotid body, pharynx, larynx, trachea, lungs, heart, and gastrointestinal tract

Question 39

Fibers transmitting unique sensation such as …

Answer 39

taste, smell, vision, hearing and balance.

Question 40

OLFACTORY (CN I) function

Answer 40

Special sensory

Question 41

The cell bodies of olfactory receptor neurons are located in

Answer 41

Olfactory organ

Question 42

The olfactory nerves pass through …

Answer 42

tiny foramina in the cribriform plate of the ethmoid bone and enter the olfactory bulb