General functional arrangement Flashcards

1
Q

What are 4 functional components which cranial nerves share with spinal nerves?

A
  • somatic efferents
  • somatic afferents
  • general visceral efferents
  • general visceral afferents
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2
Q

What are 3 functional categories contained by cranial nervves in addition to those shared with spinal nerves?

A
  1. special visceral efferents (branchiomotor)
  2. special somatic afferents - special senses, hearing and balance
  3. special visceral afferents - taste and smell
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3
Q

Identify the origins of the following on the diagram: oculomotor nerve, trochlear nerve, trigeminal nerve, abducents nerve, facial nerve

A
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4
Q

Identify which is the dorsal and which is the ventral aspect of the brainstem and find the oculomotor nerve origin and the trochlear nerve origin.

A
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5
Q

What is shown in images C/D?

A

level of sectioning of the brainstem (superior coliculus) - shows transverse section in D

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6
Q

What is shown in image E?

A

Diagram of the arrangement of the oculomotor nuclei subserving the various extraocular muscles.

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7
Q

Identify the trochlear, trigeminal and abducens nerves in the photograph.

A
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8
Q

Note the course of the oculomotor nerve in the diagram.

A
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9
Q

Identify the origins of the trochlear nerve on the ventral and dorsal diagrams. What is shown in C/D?

A

level of brainstem - inferior colliculus - affords view seen in D

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10
Q

Identify the course of the trochlear nerve in the image.

A
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11
Q

What is shown in the diagram?

A

origin of abducens nerve & cross section at mid-pons level of brainstem

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12
Q

Note the course of the abducens nerve in the diagram from brainstem to orbit.

A
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13
Q

What is shown in the diagram?

A

ventral and dorsal views of the brainstem showing origin and course of trigeminal nerve (blue)

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14
Q

What is shown in the image?

A

level of section in mid pons to illustrate where abducens nerve originates - includes superior and middle cerebral peduncles and upper part of 4th ventricle

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