Which plexus gives rise to the sciatic nerve?
Online Answer
sacral plexusThe sacral plexus gives rise to one major nerve and six collateral nerve branches. The sciatic nerve exits the pelvis through the greater sciatic notch and then descends between the greater trochanter of the femur and the ischial tuberosity..
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The plexus is formed by the anterior rami (divisions) of the sacral spinal nerves S1, S2, S3 and S4. It also receives contributions from the lumbar spinal nerves L4 and L5. In this article, we shall look at the anatomy of the sacral plexus – its formation and major branches..
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Anatomical terms of neuroanatomy 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 vertebrae and sacral vertebrae (L4-S4)..
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