会阴神经浅支
Ramus superficialis nervi perinealis
定义
会阴神经浅支为会阴部皮肤及阴囊后部或大阴唇提供感觉神经支配。
会阴神经浅支是会阴神经的终末分支之一。会阴神经是阴部神经的分支。阴部神经绕坐骨棘及骶棘韧带走行,进入会阴区后分为三支,包括会阴神经、阴茎/阴蒂背神经及肛门下神经。会阴神经进一步分为浅支和深支。
会阴神经浅支含有多种神经纤维,传导来自以下部位的躯体一般感觉:1)会阴部皮肤;2)阴囊后部皮肤(即阴囊后神经,见于男性)或大阴唇后部(即大阴唇后神经,见于女性)。
请注意,与会阴神经浅支不同,深支不支配皮肤感觉,仅支配会阴区的肌肉。
參考資料
Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 5: Pelvis’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 490-491.
Rea, P. (2015). ‘Chapter 3: Lower Limb Nerve Supply’ in Essential Clinically Applied Anatomy of the Peripheral Nervous System in the Limbs. Editor(s): Rea, P. Academic Press University of Glasgow, Glasgow, UK, pp. 101-177. https://doi.org/10.1016/B978-0-12-803062-2.00003-6
Kinter, K.J. and Newton, B.W. Anatomy, Abdomen and Pelvis, Pudendal Nerve. [Updated 2022 Sep 12]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK554736/