Cranial Nerves and Functions

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What cranial nerve is responsible for the sense of smell?

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1

What cranial nerve is responsible for the sense of smell?

Cranial Nerve I (Olfactory)

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2

What is the sensory function of CN II?

Vision

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3

Which cranial nerve moves the eye and innervates four eye muscles?

Cranial Nerve III (Oculomotor)

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4

What is the function of the levator palpebrae muscle?

It helps open the eyelid.

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5

Which cranial nerve innervates the lateral rectus muscle?

Cranial Nerve VI (Abducens)

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6

What is the mnemonic to remember cranial nerve innervation for eye muscles?

LR6SO4 (Lateral rectus CN 6, Superior oblique CN 4)

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7

Which cranial nerve is the smallest?

Cranial Nerve IV (Trochlear)

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8

What is the somatic motor function of CN V?

Mastication (chewing)

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9

What are the three sections of the trigeminal nerve?

Ophthalmic, maxillary, and mandibular.

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10

What is the main function of CN VII (Facial Nerve)?

It is the chief somatic motor nerve to the facial muscles.

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11

Which cranial nerve sends taste information from the anterior 2/3 of the tongue?

Cranial Nerve VII (Facial)

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12

What are the two components of CN VIII (Vestibulocochlear Nerve)?

Vestibular and cochlear nerves.

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13

What is the primary function of the cochlear nerve?

Hearing.

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14

Which cranial nerve is responsible for taste and swallowing in the posterior 1/3 of the tongue?

Cranial Nerve IX (Glossopharyngeal)

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15

What is the longest cranial nerve?

Cranial Nerve X (Vagus)

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16

What does the vagus nerve innervate outside the head or neck?

Thoracic and abdominal viscera.

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17

What is the function of CN XI (Accessory Nerve)?

Only motor; innervates upper trapezius and sternocleidomastoid muscles.

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18

Which cranial nerve is responsible for tongue motion?

Cranial Nerve XII (Hypoglossal)

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19

What type of nerve is cranial nerve IX?

Mixed nerve (sensory and motor functions).

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20

Which cranial nerve is primarily responsible for facial movement?

Cranial Nerve VII (Facial Nerve).

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21

What is the primary sensory function of CN X?

Taste from the epiglottis.

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22

Which cranial nerve has purely motor functions related to the eye muscles?

Cranial Nerve IV (Trochlear) and Cranial Nerve VI (Abducens).

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23

What muscle does the glossopharyngeal nerve help with?

Swallowing.

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24

What cranial nerve provides motor function for vocalization?

Cranial Nerve X (Vagus).

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25

What muscle group does the accessory nerve innervate?

Upper trapezius and sternocleidomastoid muscles.

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26

What is the role of CN XII during speech?

Facilitates tongue motion.

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27

Which cranial nerve is involved in balance and equilibrium?

Vestibular component of CN VIII (Vestibulocochlear).

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28

What cranial nerve is responsible for innervating the constrictor muscles of the iris?

Cranial Nerve III (Oculomotor).

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29

Which cranial nerves are primarily involved in eye movement?

Cranial Nerve III (Oculomotor), Cranial Nerve IV (Trochlear), and Cranial Nerve VI (Abducens).

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30

What type of functions does CN VII include?

Mixed nerve functions (motor and sensory).

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31

What anatomical landmark is associated with the vagus nerve?

Innervates various organs in the thoracic and abdominal cavities.

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