Chapter 13: Cranial Nerves Flashcards

1
Q

How many cranial nerves are there?

A

12

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2
Q

What are the three general functions of cranial nerves?

A

sensory, motor, or mixed

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3
Q

I. Olfactory nerve

A

looks like a match stick - sense of smell

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4
Q

II. Optic nerve

A

has an x shape to it - sense of vision

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5
Q

III. Oculomotor nerve

A

located in the midline at the superior portion of the pons - movement to the eye and the parasympathetic dilation of the pupil

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6
Q

IV. trochlear nerve

A

superior and lateral in position to the pons - just one muscle to the eye

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7
Q

V. trigeminal nerve (four functions)

A

mixed nerve
1. sensation to the face
2. motor function is chewing/mastication

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8
Q

VI. abducens nerve

A

controls one muscle to the eye

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9
Q

VII. facial nerve

A

adjacent to VIII - a mixed nerve that controls sense of taste (2/3rds) and controls facial expression and controls parasympathetic nervous system of many glands

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10
Q

VIII. vestibulocochlear nerve

A

adjacent to VII - senses of hearing and balance

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11
Q

IX. glossopharyngeal nerve

A

a mixed nerve that senses 1/3 sense of taste, sensation to the throat, controls swallowing

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12
Q

X. Vagus nerve

A

a mixed nerve - controls most of the thoracic organs, controls some of language, pretty much a lot

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13
Q

XI. Accessory Nerve

A

looks like a ladder - a motor nerve that moves the head and neck.

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14
Q

XII. hypoglossal nerve

A

motor to intrinsic and extrinsic mucles of the tongue, and supports swallowing

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