Chapter 6 The Nervous System 221
Figure 6.21 Major nerves emanate from the brachial, lumbar, and sacral plexuses. The word plexus is derived
from the Latin plectere, meaning “to braid.” Why is this a fitting term for a group of nerves?
A. Brachial plexus
(anterior view)
B. Lumbar plexus
(anterior view)
C. Sacral plexus
(posterior view)
Superior
gluteal nerve
Inferior
gluteal
nerve
Sciatic
nerve
Posterior
femoral
cutaneous
nerve
Common
fibular
nerve
Tibial
nerve
Femoral
nerve
Obturator
nerve
Saphenous
nerve
Radial
nerve
Axillary nerve
Musculocutaneous
nerve
Ulnar
nerve
Radial
nerve
(superficial
branch)
Median
nerve
Label Art