The anterior divisions of the
lumbar nerve
The lumbar nerves are the five pairs of spinal nerves emerging from the lumbar vertebrae. They are divided into posterior and anterior divisions.
Structure
The lumbar nerves are five spinal nerves which arise from either side of the spinal cord ...
s,
sacral nerve
A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. These are grouped into th ...
s, and
coccygeal nerve
A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. These are grouped into the ...
form the lumbosacral plexus, the first lumbar nerve being frequently joined by a branch from the twelfth thoracic. For descriptive purposes this plexus is usually divided into three parts:
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lumbar plexus
The lumbar plexus is a web of nerves (a nervous plexus) in the lumbar region of the body which forms part of the larger lumbosacral plexus. It is formed by the Ventral ramus of spinal nerve, divisions of the first four lumbar nerves (L1-L4) and ...
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sacral plexus
In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg and foot, and part of the pelvis. It is part of the lumbosacral plexus and emerges from the lumbar verte ...
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pudendal plexus
Injuries to the lumbosacral plexus are predominantly witnessed as bone injuries.
Lumbosacral trunk
The lumbosacral trunk is nervous tissue that connects the lumbar plexus with the sacral plexus.
Structure
The lumbosacral trunk comprises the whole of the ventral rami of L5 and a part of L4. It appears at the medial margin of the psoas major ...
and
sacral plexus
In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg and foot, and part of the pelvis. It is part of the lumbosacral plexus and emerges from the lumbar verte ...
palsies are common injury patterns.
References
External links
* - "Lumbosacral Plexus"
Additional Images
File:Slide2Anat.JPG, Lumbosacral plexus Deep dissection.
File:Slide4Anat.JPG, Lumbosacral plexus Deep dissection.
Nerve plexus
Nerves of the lower limb and lower torso
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