- May 2, 2026The pelvic splanchnic nerves (nervi erigentes) are preganglionic parasympathetic fibres arising from the ventral rami of S2, S3, and S4.…
- May 2, 2026The inferior cluneal nerves arise from the posterior femoral cutaneous nerve (S1-S3) as it exits below the inferior border of…
- May 2, 2026The pudendal nerve is the primary perineal nerve, supplying the external sphincters, erectile tissue muscles, and perineal sensation. Pudendal neuralgia…
- May 2, 2026The inferior gluteal nerve has a single function — supplying the gluteus maximus — and has no cutaneous territory. Its…
- May 2, 2026The superior gluteal nerve supplies the primary hip abductors and the TFL, exiting the pelvis above the piriformis unlike the…
- May 2, 2026The inferior gluteal nerve is a purely motor nerve supplying only the gluteus maximus, the largest muscle in the body.…
- May 2, 2026The sciatic nerve is the largest peripheral nerve in the body (1.5-2 cm diameter), formed from the L4-S3 nerve roots…
- May 2, 2026The femoral nerve is the largest branch of the lumbar plexus (L2-L4), emerging from the lateral border of psoas major…
- May 2, 2026The pudendal nerve is the primary nerve of the perineum, supplying the external sphincters, perineal muscles, and genital skin. Its…
- May 2, 2026Colles fascia (superficial perineal fascia) is the deep layer of the superficial perineal fascia, continuous with Scarpa fascia of the…