Nerve: Inferior anal nerves
The superficial branches of the internal pudendal artery. (Inferior anal nerves visible but not labeled.)
Pudendal nerve, its course through the lesser sciatic foramen, and branches, including inferior anal at bottom right.
Latin	nervi anales inferiores, nervi rectales inferiores, nervus haemorrhoidalis inferior
Gray's	subject #213 968
Innervates	Rectum

The Inferior rectal nerves (inferior anal nerves, inferior hemorrhoidal nerve) usually branch from the pudendal nerve but occasionally arises directly from the sacral plexus; they cross the ischiorectal fossa along with the inferior hemorrhoidal vessels, toward the anal canal and the lower end of the rectum, and is distributed to the Sphincter ani externus and to the integument around the anus.

Branches of this nerve communicate with the perineal branch of the posterior femoral cutaneous and with the posterior scrotal nerves at the forepart of the perineum.

Contents 1 Supplies 2 See also 3 Additional images 4 External links

[edit] Supplies

Skin and external anal sphincter but doesn't supply the actual rectum

[edit] See also

• Inferior rectal artery

[edit] Additional images

The perineum. The integument and superficial layer of superficial fascia reflected.

Sacral plexus of the right side. (Hemorrhoidal branch of pudic labeled at bottom right.)

[edit] External links

• Details at Oklahoma State
• SUNY Labs 41:08-0102 - "The Female Perineum: Contents of the Pudendal Canal"
• SUNY Figs 41:04-10 - "Inferior view of female perineum, branches of the internal pudendal artery."
• perineum at The Anatomy Lesson by Wesley Norman (Georgetown University) (analtriangle3)
• Human anatomy at Dartmouth figures/chapter_32/32-2.HTM
• Human anatomy at Dartmouth figures/chapter_32/32-3.HTM

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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v • d • e Nerves of lower limbs and lower torso: the lumbosacral plexus (L1-Co) (TA A14.2.05-07, GA 9.948) lumbar plexus (L1-L4) iliohypogastric lateral cutaneous branch · anterior cutaneous branch ilioinguinal anterior scrotal ♂/labial ♀ genitofemoral femoral branch/lumboinguinal · genital branch lateral cutaneous of thigh patellar obturator anterior (cutaneous) · posterior · accessory femoral anterior cutaneous branches · saphenous (infrapatellar, medial crural cutaneous) sacral plexus (L4-S4) sciatic common fibular lateral sural cutaneous (sural communicating branch) · deep fibular (lateral terminal branch, medial terminal branch, dorsal digital) · superficial fibular (medial dorsal cutaneous, intermediate dorsal cutaneous, dorsal digital) tibial medial sural cutaneous · medial calcaneal · medial plantar (common plantar digital nerves, proper plantar digital) · lateral plantar (deep branch, superficial branch, common plantar digital, proper plantar digital) sural lateral dorsal cutaneous · lateral calcaneal other muscular: superior gluteal/inferior gluteal · lateral rotator group (to quadratus femoris, to obturator internus, to the piriformis) cutaneous: posterior cutaneous of thigh (inferior cluneal, perineal branches) · perforating cutaneous coccygeal plexus (S4-Co) pudendal: inferior anal · perineal (deep, posterior scrotal ♂/labial ♀) · dorsal of the penis ♂/clitoris ♀ anococcygeal cutaneous innervation of the lower limbs