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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). [ 1 ] A sacral plexopathy is a disorder affecting the nerves of ...
The sciatic nerve, also called the ischiadic nerve, is a large nerve in humans and other vertebrate animals. It is the largest branch of the sacral plexus and runs alongside the hip joint and down the lower limb. It is the longest and widest single nerve in the human body, going from the top of the leg to the foot on the posterior aspect.
The sciatic nerve comprises nerve roots L4, L5, S1, S2, and S3 in the spine. [25] These nerve roots merge in the pelvic cavity to form the sacral plexus and the sciatic nerve branches from that. Sciatica symptoms can occur when there is pathology anywhere along the course of these nerves. [26]
6423. Anatomical terminology. [edit on Wikidata] The sacral spinal nerve 1 (S1) is a spinal nerve of the sacral segment. [1] It originates from the spinal column from below the 1st body of the sacrum. Sacrum, showing bodies in center.
5901. Anatomical terms of neuroanatomy. [edit on Wikidata] A nerve plexus is a plexus (branching network) of intersecting nerves. [1] A nerve plexus is composed of afferent and efferent fibers that arise from the merging of the anterior rami of spinal nerves and blood vessels. There are five spinal nerve plexuses, except in the thoracic region ...
Plan of sacral and pudendal plexuses. (Superior gluteal labeled at upper left.) The superior gluteal nerve is a mixed (motor and sensory) nerve of the sacral plexus that originates in the pelvis. It provides motor innervation to the gluteus medius, gluteus minimus, tensor fasciae latae, and piriformis muscles; it also has a cutaneous branch.
Piriformis nerve. Diagram of sacral plexus and pudendal plexus. (Label "to piriformis" is at center left.) The piriformis nerve, also known as the nerve to piriformis, is the peripheral nerve that provides motor innervation to the piriformis muscle.
nervi spinalis. FMA. 6424. Anatomical terms of neuroanatomy. [edit on Wikidata] The sacral spinal nerve 2 (S2) is a spinal nerve of the sacral segment. [1] It originates from the spinal column from below the 2nd body of the sacrum. Sacrum, showing bodies in center.