Quiz 4: Cervical Plexus Flashcards Preview

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Flashcards in Quiz 4: Cervical Plexus Deck (63)
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1

The cervical plexus is formed by the anterior primary rami of ____ through ____ spinal nerves.

C1, C4

2

T/F: The nerve roots of the cervical plexus form a series of communicating loops.

True

3

Fibers from what communicate with the loop formed by C1 and C2?

Inferior Vagal Ganglion

4

Fibers from the spinal accessory nerve carry ____________ information.

Proprioceptive

5

Fibers from the spinal accessory nerve communicate with the loop formed by what?

C2 & C3 with C3 & C4

6

Fibers from sternocleidomastoid travel to _____.

C2

7

Fibers from Trapezius travel to ______.

C3 & C4.

8

The hypoglossal nerve communicates with C1 fibers that will later separate from the hypoglossal nerve to become what?

Superior root of the ansa cervicalis

9

C1 fibers from the hypoglossal nerve supply what muscles?

Thyrohyoid & Geniohyoid

10

Usually three gray rami communicans carry ___________ __________ fibers to the loop between C1 & C2 and roots of C3 & C4.

Postganglionic sympathetic

11

What type of postganglionic sympathetic fibers, specifically, are carried in the gray rami communicans?

Vasomotor, Sudomotor and Pilomotor

12

What does vasomotor supply?

Muscular lining in blood vessels

13

What does sudomotor supply?

Sweat glands

14

What does pilomotor supply?

Hair follicles

15

What does the lesser occipital nerve supply?

-Skin on superior 1/3 of auricle
-Skin behind the ear

16

The Lesser Occipital Nerve carries fibers from what level(s)?

C2 (and occasionally C3)

17

Why is the lesser occipital nerve clinically significant?

May be implicated in cases of cervicogenic headache. Adjusting C1/C2 and occiput can help.

18

The Great Auricular Nerve carries fibers from what level?

C2 & C3

19

Where does the Great Auricular Nerve enter?

The parotid gland

20

What does the Great Auricular Nerve divide into?

Anterior and Posterior Branches

21

The anterior branch of the Great Auricular Nerve combines with what nerve?

Facial Nerve VII

22

What does the anterior branch of the Great Auricular Nerve (& CN VII) supply?

The skin over the parotid gland

23

What does the posterior branch of the Great Auricular Nerve supply?

Skin over the mastoid process.

24

Where does the Transverse Cutaneous Nerve of the neck carry fibers from?

C2 & C3

25

What two branches does the Transverse Cutaneous Nerve of the neck divide into?

-Ascending branch
-Descending branch

26

What do the ascending and descending branches of the Transverse Cutaneous Nerve of the neck supply?

Skin over the platysma muscle

27

The trunks from C3 & C4 combine to form a trunk that gives rise to what?

Medial, Intermediate and Lateral Supraclavicular Nerves

28

What does the Medial Supraclavicular Nerve supply?

Skin inferior to the sternal end of the clavicle, as far inferior as the second rib.

29

What does the Intermediate Supraclavicular Nerve supply?

Skin over the deltoid and pectoralis major, as far inferior as the second rib.

30

What does the Lateral Supraclavicular Nerve supply?

Skin over the superior and lateral aspects of the shoulder.