Cervical Plexus Flashcards Preview

Clinical Anatomy - Trunk/Thorax > Cervical Plexus > Flashcards

Flashcards in Cervical Plexus Deck (9)
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1

Cervical plexus

series of nerve loops from anterior rami of C1-C4

2

Cutaneous branches of cervical plexus (4)

greater auricular nerve
transverse cervical nerve
lesser occipital nerve
supraclavicular nerves

3

Greater auricular nerve

C2-C3
sensory
innervates skin near concha auricle (outer ear) and external acoustic meatus (ear canal)

4

Transverse cervical nerve

C2-C3
sensory
innervates anterior region of neck

5

Lesser occipital nerve

C2-C3
sensory
innervates the skin and scalp posterosuperior to the auricle

6

Supraclavicular nerves

C3-C4
sensory
innervate region of supraspinatus, shoulder, and upper thoracic region

7

Ansa cervicalis

loop formed from C1-C3
motor
geniohyoid (C1 only)
thyrohyoid (C1 only)
sternothyroid
sternohyoid
omohyoid

8

Phrenic nerves

C3-C5 (primarily C4)
motor and sensory
innervates diaphragm and the pericardium

9

Segmental branches of cervical plexus

C1-C4
motor
innervates anterior and middle scalenes