Assertion: lumbar plexus | /r/HasProperty | located
Facets:
value: deeply
type: DEGREE
value: next to the lumbar spine
type: LOCATION
Source sentences:
text: The lumbar plexus is composed of segments Th12–L4 and is located next to the lumbar spine behind the psoas major muscle.
text: However, the lumbar plexus and sciatic nerve are located deeply, so patients should be kept in the lateral position and suffer from long surgical time even if nerve stimulator or ultrasonic assistance is used.
text: The dorsal branch of the lumbar artery is also closely related to the transverse processes and the posterior aspect of the psoas muscle (see Figure 7b), where the lumbar plexus is located.