The genitofemoral nerve (from Latin gender "gender" and femur "thigh") is a mixed sensorimotor peripheral nerve . It emerges from the first two roots of the loin part of the lumbosacral plexus and supplies parts of the thigh and the external genital organs . The nerve divides into two branches: ramus genitalis and ramus femoralis .
The genital branch is also known as the external spermatic nerve . It pulls on the inside of the abdominal wall to the inguinal canal and passes through it to the outside. It supplies the skin of the groin area and the scrotum or the large labia (lacking in animals) sensitively and the cremaster muscle (testicle lifter) with motor. In animals, it also takes care of the skin of the udder and that of the mammary complexes of the groin area.
The ramus femoralis is also known as the lumboinguinal nerve . It runs with the femoral artery and vein through the lacuna vasorum to the inside of the thigh. It supplies the inside of the thigh near the torso sensitively.
With carnivores the Ramus is missing femoralis, here take branches of the genital branch the corresponding innervation.
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- Franz-Viktor Salomon: nervous system, systema nervosum. In: Franz-Viktor Salomon, Hans Geyer, Uwe Gille (Ed.): Anatomy for veterinary medicine. Enke, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 464-577.