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Cranial Nerves Flashcards

(55 cards)

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1
Q

What does the CNS include

A

Brain and spinal cord

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2
Q

What are collections of cell bodies in the CNS called

A

Nuclei

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3
Q

What does the peripheral nervous system included

A

Anything that lies out side of the brain and spinal cord

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4
Q

How many pairs of cranial nerves are there

A

12

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5
Q

How many pairs of spinal nerves are there

A

31

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6
Q

What are collections of cell bodies in the PNS called

A

Ganglia

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7
Q

What part of the nervous system are the cranial nerves part of

A

PNS they are peripheral nerves

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8
Q

What do cranial nerves carry

A

Sensory, motor and autonomic information between the brain and the head neck region

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9
Q

What are the names of the cranial nerves in order

A

Olfactory
Optic
Oculomotor
Trochlear
Trigeminal
Abducens
Facial
Vestibulocochlear
Glossopharyngeal
Vagus
Accessory
Hypoglossal

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10
Q

What fibres do the olfactory nerve carry

A

Sensory

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11
Q

What fibres do the optic nerve carry

A

Sensory

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12
Q

What fibres do the oculomotor nerves Carry

A

Motor

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13
Q

What fibres do the trochlear nerves carry

A

Motor

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14
Q

What fibres do the trigeminal nerve carry

A

Both sensory and motor

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15
Q

What fibres do the abducens nerves carry

A

Motor

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16
Q

What fibres do the facial nerves carry

A

Both sensory and motor

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17
Q

What fibres do the vestibulocochlear nerves carry

A

Sensory

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18
Q

What fibres do the glossopharyngeal nerves carry

A

Both sensory and motor

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19
Q

What fibres do the vagus nerves carry

A

Both sensory and motor

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20
Q

What fibres do the accessory nerves carry

A

Motor

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21
Q

What fibres do the hypoglossal nerves carry

A

Motor

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22
Q

What cranial nerves carry parasympathetic fibres

A

Oculomotor
Facial
Glossopharyngeal
Vagus

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23
Q

Where do cranial nerves III to XII originate

Study These Flashcards
A

Brainstem- mid-brain, pons, medulla

24
Q

Where does cranial nerve I originate

Study These Flashcards
A

Cranial nerve I the olfactory nerve is attached to the brain

25
What is the function of cranial nerve 1
Smell
26
Where does cranial nerve II originate
Cranial nerve II the optic nerve is attached to the brain
27
What is the function of cranial nerve II
Vision
28
What is the function of cranial nerves III, IV and VI
All carry motor fibres which help to control the extra ocular muscles of the eye
29
What does cranial nerve III innnervate
Cranial nerve III is the oculomotor nerve and this innervates the medial rectus, superior rectus, inferior rectus, inferior oblique and Levator palpabrae superioris
30
Where does cranial nerve III carry parasympathetic fibres to
The oculomotor nerve carry’s parasympathetic fibres into the orbit to constrict the eye
31
Where is the nuclei of cranial nerve III located
Midbrain
32
Where does cranial nerve III exit
The oculomotor nerves exit at the junction between the midbrain and the pons
33
What does cranial nerve IV innervate
Cranial nerve IV the trochlear nerve innervates the superior oblique in the eye
34
Where is the nuclei of the IV cranial nerve located
In the mid brain
35
What does cranial nerve VI innervate
Cranial nerve VI is the abducens nerve which innervates the lateral rectus
36
Where are the nuclei of the VI cranial nerve located
The pons
37
Where is cranial nerve V attached to
The pons
38
What are the 3 branches of cranial nerve V
V1- Ophthalmic V2- Maxillary V3- Mandibular
39
Of the 3 branches of the V cranial nerve which one carries motor fibres
Mandibular branch
40
What do the sensory fibres of cranial nerve V do
They carry general sensation
41
Where is cranial nerve VII found
Cranial nerve VII is the facial nerve and this is attached to the brainstem at the pontomedullary junction
42
What are the 2 roots of cranial nerve VII
Medial which gives off motor fibres Lateral which gives off sensory and parasympathetic fibres
43
What special sensory fibres do in cranial nerve VII
The special sensory fibres in the facial nerve transmit taste of the anterior 2/3 of the tongue
44
Where do upper motor neurons synapse
They synapse within the cell bodies of lower motor neurons
45
Where is cranial nerve IX located
Cranial nerve IX is the glossopharyngeal nerve which is attached to the medulla via nerve rootlets
46
What are the functions of cranial nerve IX
Taste General sensation Afferents from the carotid sinus and carotid body
47
Where is cranial nerve X located
Cranial nerve X is the vagus nerve and this is found attached to the medulla via small rootlets
48
Where are the rootlets of cranial nerve XI found
The rootlets of the accessory nerves arise from the medulla
49
How does cranial nerve XI leave the brain
The accessory nerve leaves the brain via the jugular foramen and join the vagus term
50
What does cranial nerve XI innervate
Cranial nerve XI is the accessory nerve and this innervates the sternocleidomastoid and trapezius muscle
51
What is cranial nerve XII
Hypoglossal nerve
52
What type of fibres does the cranial nerve XII carry
Motor nerve fibres
53
What does the hypoglossal nerve innervate
Muscles of the tongue
54
Where does cranial nerve XII arise from
The medulla
55
How does cranial nerve XII leave the brain
Through the hypoglossal canal

Neuro (17 decks)

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