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Gross II > Unit I Innervations Head and Neck > Flashcards

Unit I Innervations Head and Neck Flashcards

1
Q

Motor innervation of facial muscles is from

A

Facial Nerve (CN VII)

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2
Q

Sensory innervation of the face is from

A

Trigeminal Nerve (CN V)

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3
Q

Name the branches of CN V (trigeminal)

A

Opthalmic
mandibular
maxillary

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4
Q

Distribution of opthalmic

A

mostly to face and scalp

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5
Q

Distribution of maxillary nerve

A

mostly to cheek and lateral to orbit

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6
Q

Distribution of mandibular nerve

A

mostly to chin and temporal region

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7
Q

Subdivisions of opthalmic nerve

A 
supraorbital
supratrochlear
external nasal
infratrochlear
lacrimal
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8
Q

Subdivisions of maxillary nerve

A

zygomaticotemporal
zygomaticofacial
infraorbital

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9
Q

Subdivisions of mandibular nerve

A

auriculotemporal
buccal
mental

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10
Q

What is Trigeminal Neuralgia?

A

severe pain in the area of sensory distribution of trigeminal nerve

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11
Q

List some manifestations of Trigeminal Neuralgia

A

Often due to touch, is most common in maxillary branch; cause unknown

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12
Q

What supplies the occipital region?

A

the greater occipital nerve

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13
Q

What primary ramus does the greater occipital nerve come form?

A

dorsal primary ramus of C2

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14
Q

What supplies the upper part of the back of the neck?

A

the third occipital nerve

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15
Q

What primary ramus does the third occipital nerve come from?

A

posterior primary ramus of C3

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16
Q

What does the third occipital nerve supply?

A

upper part of the back of the neck

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17
Q

What supplies the lower part of the back of the neck?

A

posterior primary ramus of C4

18
Q

Is C1 strictly a motor or sensory nerve?

A

motor

19
Q

What is the sensory innervation of the anterior and lateral aspects of the neck?

A

Anterior (ventral) primary rami of C2-C4

20
Q

What forms the Cervical plexus?

A

ventral primary rami of C1-C4

21
Q

What does C5-C8 supply

A

sensory innervation to the skin of the upper limb

22
Q

What supplies the lateral part of the occipital regin, posterior to the ear?

A

the lesser occipital nerve

23
Q

What does the lesser occiptal nerve come from?

A

C2

24
Q

What supplies the angle of the mandible and area inferior to the ear?

A

the Great auricular nerve

25
Q

What does the great auricular nerve come from?

A

C2-C3

26
Q

What supplies the anterior surface of the neck?

A

the transverse cervical nerve

27
Q

What does the transverse cervical nerve come form?

A

C2-C3

28
Q

What does the supraclavicular nerve supply?

A

the lateral surface of the neck

29
Q

List the subdivisions of the supraclavicular nerve

A

medial
intermediate
lateral

30
Q

What do the motor fibers of the cervical plexus innervate?

A

infrahyoid muscles

31
Q

What is the loop called that the motor fibers arise from?

A

ansa cervicalis

32
Q

What does the superior root of the ansa cervicalis come from?

A

C1, or C1-C2

33
Q

What does the superior root of the ansa cervicalis descend from?

A

the hypoglassal nerve

34
Q

What does the inferior root of the ansa cervicalis come from?

A

C2-C3

35
Q

What does the inferior root of the ansa cervicalis descend from?

A

the cervical nerve branches to join the supeior root

36
Q

What three muscles does the ansa cervicalis (cervical plexus) supply?

A

sternohyoid
sternothyroid
omohyoid

37
Q

What innervates the thyrohyoid?

A

the hypoglossal nerve

38
Q

The phrenic nerve arises from?

A

C3-C5

39
Q

What are the motor innervations of the phrenic?

A

motor to diaphragm

40
Q

What are the sensory innervations of the phrenic nerve?

A

some sensory to membranes in the thorax and abdomen

41
Q

Where in the neck can the phrenic nerve be found?

A

lying on the anterior side of the anterior scalene muscle

Gross II (9 decks)

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