Download Schematic Drawing of the Lumbar Plexus

“Nerve” = a bundle
of nerve fibers wrapped
in connective tissue
“Ganglion” = any thickening
along a nerve
Functional effect of a
Peripheral Nerve Plexus
Brain & Spinal Cord
Distal End of the
Spinal Cord
Anatomy of a
Spinal Tap
Comparison of Somatic and Sympathetic
Pathways in the Thorax
Typical Spinal Nerve
Contrast between Somatic and
Autonomic Motor Pathways
Comparison of Somatic and Sympathetic
Pathways in the Thorax
The Sympathetic System prepares the body
for “fight or flight” situations
Sympathetic
System
Sympathetic Pathways &
Targets in the Limbs
Sympathetic
System
The Parasympathetic System helps the
body to “rest and digest”
Parasympathetic
System
Autonomic Nerve
Plexuses in the
Abdomen &
Thorax
Sympathetic
System
Sympathetic Pathways &
Targets in the Limbs
Parasympathetic
System
Typical Spinal Nerve
Somatic System
& Spinal Cord
Cervical Plexus
Brachial Plexus
Lumbar
Plexus
Retroperitoneal
view of
Major Vessels
of the Abdomen
Sacral Plexus
Autonomic Nervous System
Anterior Horn, Spinal cord
Silver stain. Magnification 40x. At very low magnification a panoramic
view of the anterior horn region of a spinal cord, showing the white
matter and the gray matter with its large multipolar neurons.