控尿肌的神经支配。
The innervation of the muscles of continence.
作者信息
Snooks S J, Swash M
出版信息
Ann R Coll Surg Engl. 1986 Jan;68(1):45-9.
Abstract
Electrophysiological evidence is presented that suggests that the innervation of the human puborectalis muscle differs from that of the external anal sphincter muscle. The latter is innervated by branches of the pudendal nerves, and the former by direct branches of the sacral plexus that enter the muscle from its pelvic surface. The striated urinary sphincter musculature also receives a dual innervation. The periurethral component is innervated by perineal branches of the pudendal nerves and the intramural portion by a different pathway, probably consisting of supralevator branches derived from the pelvic nerves. These findings are relevant to understanding the embryological derivation of these muscles and have practical importance in the surgery of this region of the body, particularly in the treatment of incontinence.
摘要
电生理证据表明，人类耻骨直肠肌的神经支配与肛门外括约肌不同。后者由阴部神经分支支配，而前者由骶丛的直接分支支配，这些分支从骨盆面进入肌肉。横纹肌性尿道括约肌也接受双重神经支配。尿道周围部分由阴部神经的会阴分支支配，壁内部份则通过不同途径支配，可能由源自盆腔神经的肛提肌上分支组成。这些发现对于理解这些肌肉的胚胎起源具有重要意义，并且在身体该区域的手术中，特别是在尿失禁的治疗中具有实际重要性。
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