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Flashcards in Unit 1 Head And Neck Deck (124)
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what is the motor innervation to the muscules of facial expression?

branches of the facial nerve

1

sensory innervation of the face is via branches of the ?

trigeminal nerve

2

what are the three major branches of the trigeminal nerve before it emerges onto the face?

opthalamic nerve: face and scalp primarily
maxillary nerve: cheek and area lateral to the orbit
mandibular nerve: chin and temporal region

3

what nerve distributes primarily to the face and scalp?

opthalamic nerve, a branch of the trigeminal

4

what nerve distributes primarily to the cheek and area lateral to the orbit?

the maxillary nerve, a branch of the trigeminal

5

what nerve distributes primarily to the chin and temporal region?

the mandibular nerve, a branch of the trigeminal nerve

6

the opthalamic nerve subdivides further into what five branches?

supraorbital nerve
supratrochlear nerve
external nasal nerve
infratrochlear nerve
lacrimal nerve

7

the maxillary nerve further subdivides into what three nerves?

zygomaticotemporal nerve
zygomaticofacial nerve
infraorbital nerve

8

the mandibular nerve further subdivides into what three nerves?

auriculotemporal nerve
buccal nerve
mental nerve

9

injury to what nerve is common with blows to the face, associated with the thin and easily fractured bone of the maxilla?

injury to the infraorbitral, branch of the maxillary nerve
- loss of sensation in the area below orbit
-common in boxers

10

what is the condition involving sudden attacks of severe pain brought on by touching the area of face innervated by trigeminal nerve?

Trigeminal Neuralgia (Tic Doloureaux)
-most common in maxiallry division
-can affect mandibular
-Rare in Opthalamic
Etiology is unknown, clinical sign; hypersensation

11

spinal trigeminal nucleus to C4 is the tract associated with what condition involving hypersensation of the face?

trigeminal neuralgia (Tic Doloureaux)

12

the dorsal primary rami of cervical nerves 2-4 supply the sensory innervation to what area?

posterior aspect of the neck and scalp

13

what is the sensory innervation of the occipital region?

greater occipital nerve (dorsal primary ramus of C2)

14

what is the exact sensory innervation of the upper part of the posterior neck?

Occipitalis Tertius or third occipital nerve
(dorsal primary ramus of C3)

15

what is the exact sensory innervation of the lower part of the posterior neck?

Dorsal primary ramus of C4

16

C1 has no dorsal root carrying sensory fibers, it is strictly a?

motor nerve

17

the sensory innervation of teh anterior and lateral aspect of the neck is from what nerves?

the ventral rami of cervical nerves 2-4

18

what nerves form the cervical plexus?

formed by the ventral primary rami of C1,C2,C3,C4

19

ventral primary rami of C5,C6,C7, and C8 provide sensory innervation to what part of the body?

the skin of the upper limb

20

the lesser occipital nerve (C2) is the sensory innervation for what?

the lateral part of the occipital region, posterior to the ear

21

what nerve sensory supplies the angle of the mandible, and the area inferior to the ear?

Great Auricular Nerve (C2,C3)
it accompanies the external jugular vein

22

the transverse cervical nerve (C2,C3) sensory supplies what area?

the anterior surface of the neck (the throat)

23

what nerve sensory supplies the lateral surface of the neck?

Supraclavicular nerve (C3,C4)

24

what are the three branches of the supraclavicular nerve?

1) medial supraclavicular nerve
2) intermediate supraclavicular nerve
3) lateral supraclavicular nerve

25

the cervical plexus also carries motor fibers to what group of muscles?

the infrahyoid (strap) muscles

26

the motor fibers from the cervical plexus arise from a loop called the?

Ansa Cervicalis

27

what are the two parts of the Ansa Cervicalis?

(Descendens Hypoglossi) superior root from C1, or C1 and C2
(Descendens Cervicalis) inferior root from C2, and C3.

28

which portion of the Ansa Cervicalis descends from the hypoglossal nerve?

superior root (descendens Hypoglossi)

29

which portion of the Ansa Cervicalis descends from cervical nerve branches?

(Descendens Cervicalis) inferior root from C2 and C3