Remove ads

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 rectal artery and veins, toward the anal canal and the lower end of the rectum, and is distributed to the sphincter ani externus (external anal sphincter, EAS) and to the integument (skin) around the anus.

Quick Facts Details, From ...
Inferior anal nerves
Thumb
The superficial branches of the internal pudendal artery. (Inferior anal nerves visible but not labeled.)
Thumb
Pudendal nerve, its course through the lesser sciatic foramen, and branches, including inferior anal at bottom right.
Details
FromPudendal nerve (usually)
sacral plexus (occasionally)
InnervatesSphincter ani externus and sensory around the anus
Identifiers
Latinnervi anales inferiores,
nervi rectales inferiores,
nervus haemorrhoidalis inferior
TA98A14.2.07.038
TA26555
FMA75469
Anatomical terms of neuroanatomy
Close

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.

Remove ads

Supplies

Cutaneous innervation below the pectinate line and external anal sphincter.

Remove ads

See also

Remove ads

Additional images

Remove ads

References

Public domain This article incorporates text in the public domain from page 968 of the 20th edition of Gray's Anatomy (1918)

Remove ads
Remove ads

Wikiwand in your browser!

Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.

Remove ads