Medical Terminology Simplified

Frame 9–88to Frame 9–91

Nervous System • CHAPTER 9 423

C1C2

C3C4

C6C7

C8

C5

T1

T2

T3

T4

T5

T6

T7

T8

T9

T10

T11

T12

L1

L2

L3

L4

L5

S1

S2

S3

S4

S5

Co1

White

matter matterGray

Spinal

nerve

Posterior

root

ganglion

Anterior

roots

Pia mater

Arachnoid

membrane

Dura

mater

Subarachnoid

space

Central

canal

Posterior

root

Sciatic

nerve

(1)

(2)

(3)

(4)

(5)

Figure 9-9Spinal nerves. (A) Spinal chord enlargement.