The lumboinguinal nerve, also known as the femoral or crural branch of genitofemoral, is a nerve in the

abdomen The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. The abdomen is the front part of the abdominal segment of the torso. ...

. The lumboinguinal nerve is a branch of the

genitofemoral nerve The genitofemoral nerve refers to a 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 femal ...

. The "femoral" part supplies skin to the femoral triangle area.

Structure

The lumboinguinal nerve arises from the genitofemoral nerve. It descends alongside the

external iliac artery The external iliac arteries are two major Artery, arteries which bifurcate off the common iliac arteries anterior to the sacroiliac joint of the pelvis. Structure The external iliac artery arises from the bifurcation of the common iliac arter ...

, sending a few filaments around it, and, passing beneath the

inguinal ligament The inguinal ligament (), also known as Poupart's ligament or groin ligament, is a band running from the pubic tubercle to the anterior superior iliac spine. It forms the base of the inguinal canal through which an indirect inguinal hernia may dev ...

, enters the sheath of the femoral vessels, lying superficial and lateral to the

femoral artery The femoral artery is a large artery in the thigh and the main arterial supply to the thigh and leg. The femoral artery gives off the deep femoral artery or profunda femoris artery and descends along the anteromedial part of the thigh in the fem ...

. Here, it pierces the anterior layer of the sheath of the vessels and the

fascia lata The fascia lata is the deep fascia of the thigh. It encloses the thigh muscles and forms the outer limit of the fascial compartments of thigh, which are internally separated by the medial intermuscular septum and the lateral intermuscular septu ...

, and supplies the skin of the anterior surface of the upper part of the

thigh In human anatomy, the thigh is the area between the hip (pelvis) and the knee. Anatomically, it is part of the lower limb. The single bone in the thigh is called the femur. This bone is very thick and strong (due to the high proportion of bone ...

. On the front of the thigh it communicates with the anterior cutaneous branches of the

femoral nerve The femoral nerve is a nerve in the thigh that supplies skin on the upper thigh and inner leg, and the muscles that extend the knee. Structure The femoral nerve is the major nerve supplying the anterior compartment of the thigh. It is the largest ...

. A few filaments from the lumboinguinal nerve may be traced to the femoral artery.

Additional images

File:Gray546.png, Structures passing behind the inguinal ligament.

External links

Photo of model
at

Waynesburg College Waynesburg University is a private university in Waynesburg, Pennsylvania. It was established in 1850 and offers undergraduate and graduate programs in more than 70 academic concentrations. The university enrolls over 2,500 students, including ...

References

{{Authority control Nerves of the lower limb and lower torso

Structure

Additional images

See also

External links

References