WordNet

located at or near or behind a part or near the end of a structure
relating to or having or lying within a scrotum; "scrotal mammals"; "scrotal testes"
Italian architect who pioneered in the use of reinforced concrete (1891-1979) (同)Pier Luigi Nervi

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《名詞の前にのみ用いて》(生物学的に,位置が)後ろの,後部の / (時間・順序が)後の;(…より)後の《+『to』+『名』》(later) / しり(buttocks)

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/10/27 10:25:25」(JST)

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The posterior scrotal branches (in men) or ""posterior labial branches"" (in women) are two in number, medial and lateral. They are branches of the perineal nerve, which is itself is a branch of the pudendal nerve. The pudendal nerve arises from spinal roots S2 through S4, travels through the pudendal canal on the fascia of the obturator internus muscle, and gives off the perineal nerve in the perineum. The major branch of the perineal nerve is the posterior scrotal/posterior labial.

They pierce the fascia of the urogenital diaphragm, and run forward along the lateral part of the urethral triangle in company with the posterior scrotal branches of the perineal artery; they are distributed to the skin of the scrotum or labia and communicate with the perineal branch of the posterior femoral cutaneous nerve.

External links

perineum at The Anatomy Lesson by Wesley Norman (Georgetown University) (analtriangle3)
figures/chapter_32/32-2.HTM - Basic Human Anatomy at Dartmouth Medical School
figures/chapter_32/32-3.HTM - Basic Human Anatomy at Dartmouth Medical School

This article incorporates text from a public domain edition of Gray's Anatomy.

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「後陰嚢神経」

Nerve: Posterior scrotal nerves
	The superficial branches of the internal pudendal artery. (Posterior scrotal nerves labeled at center right.)
	Sacral plexus of the right side. (Posterior scrotal nerves not labeled, but visible at bottom right.)
Latin	nervi scrotales posteriores
Gray's	p.968
From	perineal nerve
	Anatomical terms of neuroanatomy