Ilioinguinal nerve (L1)
Nerves · L1
Runs below and parallel to the iliohypogastric nerve, pierces internal oblique near the ASIS to enter the inguinal canal (it does NOT pass through the deep ring), lies on the spermatic cord or round ligament and leaves through the superficial inguinal ring.
Traced from the start
- L1 anterior ramusL2 anterior ramus
- Upper lumbar branches (L1–L2)
- Ilioinguinal nerve (L1)
Detail
- Motor
- Lower internal oblique and transversus abdominis
- Sensory
- Upper medial thigh, root of the penis and anterior scrotum, or mons pubis and labium majus
- Reflex
- Afferent limb of the cremasteric reflex
When it goes wrong
Caught in suture or mesh at inguinal hernia repair, or cut at a Pfannenstiel incision
Burning groin pain (post-herniorrhaphy neuralgia) with numbness of the upper medial thigh and anterior scrotum or labium majus; the cremasteric reflex may be lost
Practise this structure
1 question in the bank tagged Inguinal Canal.