Nervous System Flashcards

1
Q

What are the 2 anatomical divisions of the nervous system?

A
  1. CNS (brain and spinal cord)

2. PNS (cranial and spinal nerves and sympathetic trunks)

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2
Q

What are the 2 functional divisions of the nervous system?

A
  1. Somatic (voluntary)

2. Autonomic (involuntary)

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3
Q

Where do cranial nerves arise?

A

Nuclei found in the brainstem

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4
Q

Name CN I

A

Olfactory

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5
Q

Name CN II

A

Optic

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6
Q

Name CN III and describe where it emerges

A

Oculomotor - Emerges on anterior surface of the brain

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7
Q

Name CN IV and describe where it emerges

A

Trochlear - Leaves posterior surface of brainstem but emerges from midbrain

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8
Q

Name CN V and describe where it emerges

A

Trigeminal - Leaves anterior aspect of lateral side of pons

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9
Q

Name CN VI

A

Abducent

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10
Q

Name CN VII

A

Facial

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11
Q

Name CN VIII

A

Vestibulocochlear

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12
Q

Where do CN VI, CN VII and CN VIII emerge?

A

Groove between lower boarder of pons and the medulla oblongata

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13
Q

Name CN IX

A

Glossopharyngeal

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14
Q

Name CN X

A

Vagus

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15
Q

Name CN XI

A

Accessory

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16
Q

Where do CN IX, CN X and cranial part of CN XI emerge?

A

Anterolateral surface of medulla between the olive and inferior cerebellar peduncle

17
Q

Where does the spinal part of CN XI emerge?

A

Spinal cord and enters the skull through the foramen magnum

18
Q

Name CN XII and describe where it emerges

A

Hypoglossal - Emerges from the anterior surface of medulla oblongata between pyramid and olive

19
Q

How does CN I leave the skull?

A

Cribriform plate

20
Q

How does CN II leave the skull?

A

Optic canal

21
Q

How does CN V₁ leave the skull?

A

Superior orbital fissure

22
Q

How does CN V₂ leave the skull?

A

Foramen rotundum

23
Q

How does CN V₃ leave the skull?

A

Foramen ovale

24
Q

How does CN III leave the skull?

A

Superior orbital fissure

25
How does CN IV leave the skull?
Superior orbital fissure
26
How does CN VI leave the skull?
Superior orbital fissure
27
What leaves the skull by the foramen spinosum?
Middle meningeal vessels
28
How does CN VII leave the skull?
Internal acoustic meatus
29
How does CN VIII leave the skull?
Internal acoustic meatus
30
How does CN IX leave the skull?
Jugular foramen
31
How does CN X leave the skull?
Jugular foramen
32
How does CN XI leave the skull?
Jugular foramen
33
How does CN XII leave the skull?
Foramen magnus