Nerves Of Gluteal And Posterior Thigh Regions

Question 1

Nerves of gluteal and posterior thigh region

Answer 1

Sciatic nerve
Superior gluteal
Inferior gluteal
Pudendal
Nerve to obturator internus
Nerve to quadratus femoris
Posterior cutaneous nerve of thigh
Clunial(superior
Middle and inferior)

Question 2

Clunial nerves

Answer 2

It innervates the skin of the gluteal region

Question 3

Superior clunial nerve

Answer 3

Supply skin of superior buttocks as far as tubercle of iliac crest

Question 4

Middle clunial

Answer 4

Supplies skin over sacrum and adjacent areas of buttocks

Question 5

Inferior clunial nerves

Answer 5

Supplies skin of inferior half of buttocks as far as greater trochanter

Question 6

Origin of sciatic nerve

Answer 6

Sacral plexus ( anterior and posterior divisions of anterior rami of L4_S3 spinal nerves

Question 7

Course of sciatic nerve

Answer 7

Leaves pelvis and enters the gluteal region via greater sciatic foramen inferior to piriformis and deep to gluteus Maximus, descends in posterior thigh deep to biceps femoris and bifurcated into tibial and common fibular nerves at apex of popliteal fossa

Question 8

Distribution of posterior cutaneous nerve of thigh

Answer 8

Supplies skin of inferior half of buttocks , skin over posterior thigh and popliteal fossa and skin of lateral perineum and upper medial thigh

Question 9

Superior gluteal nerve

Answer 9

Originated from sacral plexus
Posterior divisions of anterior rami of L4 to S1

Question 10

Course of superior gluteal nerve

Answer 10

It enters the gluteal region via greater sciatic foramen superior to piriformis courses laterally between gluteus medius and minimus as far as tensor fascia latae

Question 11

Distribution of superior gluteal

Answer 11

It innervates gluteal minimus, gluteal medius, tensor fascia latae

Question 12

Origin of inferior gluteal nerve

Answer 12

Sacral plexus, posterior divisions of anterior rami of L5_S2 spinal nerves

Question 13

Course of inferior gluteal

Answer 13

Enters gluteal region via greater sciatic foramen , inferior to piriformis and deep to inferior part of gluteus Maximus dividing into several branches

Question 14

Nerve to quadratus femoris 0rigin

Answer 14

Sacral plexus Anterior division of anterior rami of L4_S1 spinal nerve

Question 15

Distribution of quadratus femoris

Answer 15

Innervates hip joint, inferior gemellus and quadratus femoris

Question 16

Origin of pudendal nerve

Answer 16

Sacral plexus anterior divisions of anterior rami of S2 to S4 spinal nerves

Question 17

Distribution of pudendal nerve

Answer 17

Principal nerve to perineum

Question 18

Course of pudendal nerve

Answer 18

Exits pelvis via greater sciatic foramen
Descends posterior to sacrosinous ligament
Enters perineum through lesser sciatic foramen

Question 19

Nerve to obturator internus

Answer 19

Sacral plexus, posterior divisions of anterior rami of l5 to s 2

Question 20

Distribution of obturator internus

Answer 20

Supplies superior gemellus and obturator internus