(Netter Basic Science) Frank H. Netter - Atlas of Human Anatomy-Elsevier (2018)

Lumbar Plexus
See also Plate 269
Schema
Subcostal nerve (T12)
T12
White and gray rami communicantes
Iliohypogastric nerve
Ilioinguinal nerve
L1
L2
Genitofemoral nerve
Lateral femoral
cutaneous nerve
L3
Anterior rami of
lumbar plexus
spinal nerves
Gray rami communicantes
Muscular branches
to psoas major and
iliacus muscles
Femoral nerve
Accessory obturator nerve (inconstant)
Respiratory diaphragm (cut)
Obturator nerve
Lumbosacral trunk
L4
L5
Anterior division
Posterior division
White and gray
rami communicantes
Subcostal nerve (T12)
Subcostal nerve (T12)
Sympathetic trunk
Iliohypogastric nerve
Ilioinguinal nerve
Genitofemoral nerve (cut)
Lateral femoral
cutaneous nerve
Femoral nerve
L1
L2
L3
L4
L1
L2
L3
L4
L5
Iliohypogastric nerve (T12, L1)
Ilioinguinal nerve (L1)
Transversus abdominis
muscle
Quadratus lumborum muscle
Psoas major muscle
Gray rami communicantes
Genitofemoral nerve (L1, 2)
Iliacus muscle
Obturator nerve
Psoas major muscle (cut)
Lateral femoral
cutaneous nerve (L2, 3)
Femoral nerve (L2–4)
Lumbosacral trunks
Inguinal ligament (Poupart’s)
Genital branch and
Femoral branch of
genitofemoral nerve
Obturator nerve (L2–4)
Plate 488
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Hip and Thigh