Nerve to the Piriformis

Nerve to the Piriformis
Nerve: Nerve to the Piriformis
Plan of sacral plexus and pudendal plexus. (Label "to piriformis" is at center left.)
The piriformis and nearby muscles
Latin nervus musculi piriformis
Gray's subject #213 957
Innervates piriformis muscle
From sacral plexus (S1–S2)

The nerve to piriformis is a nerve that innervates the piriformis muscle.

Course

The nerve to piriformis originates in the sacral plexus. It arises from the dorsal division of the second sacral nerve, or the dorsal divisions of the first and second sacral nerves (S1 & S2), and enters the anterior surface of the piriformis muscle; this nerve may be double.

See also

  • Piriformis

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 As such, some of the information contained within it may be outdated.

v · d · eNerves of lower limbs and lower torso: the lumbosacral plexus (L1–Co) (TA A14.2.05–07, GA 9.948)
lumbar
plexus
(L1–L4)
sacral
plexus
(L4–S4)
other
coccygeal
plexus
(S4–Co)

M: PNS

anat(h/r/t/c/b/l/s/a)/phys(r)/devp/prot/nttr/nttm/ntrp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug(N1B)

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