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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 ]
Its branches are all cutaneous, and are distributed to the gluteal region, the perineum, and the back of the thigh and leg. The inferior clunial nerves (or gluteal branches), three or four in number, turn upward around the lower border of the gluteus maximus , and supply the skin covering the lower and lateral part of that muscle.
The lumbar plexus and its branches. Since the lumbar plexus and sacral plexus are interconnected, they are sometimes referred to as the lumbosacral plexus . The intercostal nerves that give rami to the chest and to the upper parts of the abdominal wall efferent motor innervation and to the pleura and peritoneum afferent sensory innervation are ...
The posterior divisions of the sacral nerves are small and diminish in size as they move downward; they emerge, except the last, through the posterior sacral foramina. The upper three are covered at their points of exit by the multifidus and divide into medial and lateral branches.
It is the largest branch of the sacral plexus and runs alongside the hip joint and down the right 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 has no cutaneous branches for the thigh.
The sacral plexus is formed anterior to the piriformis muscle and gives rise to the sciatic nerve, the superior and inferior gluteal nerves, and the pudendal and posterior femoral cutaneous nerves. [3] However, most of the sacral plexus nerves are scarcely recognizable, because they leave the pelvis through the greater sciatic foramen. From the ...
The nerve to quadratus femoris is a nerve of the sacral plexus that provides motor innervation to the quadratus femoris muscle and gemellus inferior muscle, and an articular branch to the hip joint. The nerve leaves the pelvis through the greater sciatic foramen .
Download as PDF; Printable version ... The plan of the lumbosacral plexus. Details; ... [edit on Wikidata] The sacral spinal nerve 1 (S1) is a spinal nerve of the ...