<prompt> A pt. operated for direct inguinal hernia developed anaesthesia at the root of the penis and adjacent part of the scrotum the nerve likely to be injured is -Genital br. of genitofemoral nerve supply dartos muscleFemoral br. of genitofemoral nerveIliohypogastric nerveIlioinguinal nerve  <response>: All the three nerves ie genifotemoral, ilioinguinal iliohypogastric are branches of the lumbar plexus and all may be injured in op. for hernia.llioinguinal-Nerve enters the inguinal canal by piercing the internal oblique muscle not through the deep ringit then emerges from the superficial inguinal ring to supply the skin ofproximomedial skin of the thighthe skin over the penile root.the upper part of the scrotumIliohypogastric nervesdivides into two branches - lateral cutaneous and anterior cutaneous.lateral cutaneous supplies - posterolateral gluteal skinAnterior cutaneous supplies - suprapubic skinGenitofemoral nerve divides into two branchesGenital andFemoralGenital or of Genitofemoral nerve - enters the inguinal canal at its deep ring and suppliesthe Cremasterthe scrotal skinFemoral or of genitofemoral nervepasses behind the inguinal ligament, enters the femoral sheath lateral to femoral artery, pierces the ant layer of the femoral sheath and fascia lata and supplies the skin anterior to the upper part of the femoral triangle. 