Genitofemoral nerve

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Genitofemoral nerve
Lumbar plexus.svg
Plan of lumbar plexus. (Genitofemoral nerve visible at upper left.)
The lumbar plexus and its branches. (Genitofemoral nerve visible at upper left.)
From lumbar plexus
To lumboinguinal, genital branch
Innervates cremaster
Latin Nervus genitofemoralis
Nervus genitalifemoralis
TA A14.2.07.008
FMA 16484
Anatomical terms of neuroanatomy

The genitofemoral nerve refers to a human nerve that is found in the abdomen. Its branches, the genital branch and femoral branch supply sensation to the upper anterior thigh, as well as the skin of the anterior scrotum in males and mons pubis in females. The femoral branch is different from the femoral nerve, which also arises from the lumbar plexus.


The genitofemoral nerve originates from the upper L1-2 segments of the lumbar plexus. It passes downwards, pierces psoas major and emerges from its anterior surface . The nerve divides into two branches, the genital branch and the lumboinguinal nerve also known as the femoral branch,[1] both of which then continue downwards and medially to the inguinal and femoral canal respectively.

Genital Branch[edit]

The genital branch passes through the deep inguinal ring and enters the inguinal canal. In men, the genital branch supplies the cremaster and scrotal skin. In women, the genital branch accompanies the round ligament of uterus, terminating in and innervating the skin of the mons pubis and labia majora.[1]

Femoral Branch[edit]

The femoral branch passes underneath the inguinal ligament, travelling through the lateral muscular compartment of the femoral canal where it communicates with the femoral nerve. Passing through the cribriform fascia of the saphenous opening of the fascia lata of the thigh, it then supplies the skin of the upper, anterior thigh.[1]




The genitofemoral nerve is responsible for both the sensory (femoral branch) and motor portions (genital branch) of the cremasteric reflex, which describes contraction of the cremasteric muscle when the skin of the superior medial part of the thigh is touched.[1] :262

Additional images[edit]

See also[edit]

This article uses anatomical terminology; for an overview, see Anatomical terminology.

External links[edit]


  1. ^ a b c d Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students (Pbk. ed.). Philadelphia: Elsevier/Churchill Livingstone. pp. 340–343. ISBN 978-0-443-06612-2.