Lower limb neurovasculature

Question 1

Lumbar plexus

Answer 1

L1-L4

Question 2

Sacral plexus

Answer 2

L4-S3

Question 3

Lumbosacral plexus supplies (2)

Answer 3

motor and sensory

Question 4

Nerves lateral border of psoas (4)

Answer 4

femoral, iliohypogastric, ilioinguinal, lateral cutaneous of thigh nerve

Question 5

nerve on the anterior surface of psoas

Answer 5

genitofemoral nerve

Question 6

nerve on medial surface of psoas

Answer 6

obturator nerve

Question 7

iliohypogastric root value

Answer 7

L1

Question 8

iliohypogastric motor distribution (2)

Answer 8

inferior transversus abdominis and internal obliques

Question 9

iliohypogastric sensory distribution (4)

Answer 9

external obliques, internal obliques, skin upper lateral gluteal to pubis, transversus abdominis

Question 10

ilioinguinal root value

Answer 10

L1

Question 11

Ilioinguinal motor distribution (3)

Answer 11

external obliques, inferior transversus abdominis, internal obliques

Question 12

Ilioinguinal sensory distribution (5)

Answer 12

anterior labium, anterior scrotum, clitoris root, penis root, skin proximal medial thigh

Question 13

Genitofemoral nerve root

Answer 13

L1-L2

Question 14

Genitofemoral nerve motor innervation

Answer 14

cremaster muscle (genital branch)

Question 15

genitofemoral nerve sensory innervation (3)

Answer 15

anterior labia majora, anterior scrotum (genital branch), proximal thigh (femoral branch)

Question 16

Lateral cutaneous nerve of the thigh nerve roots

Answer 16

L2-L3

Question 17

Lateral cutaneous nerve of the thigh sensory innervation

Answer 17

skin anterolateral of thigh

Question 18

Femoral nerve roots

Answer 18

L2-L4

Question 19

Femoral nerve motor innervation (4)

Answer 19

Iliacus, pectineus, quadriceps femoris, sartorius

Question 20

Femoral nerve sensory innervation (3)

Answer 20

Hip joint, skin anteromedial thigh, skin of medial leg and foot (saphenous nerve)

Question 21

Obturator nerve roots

Answer 21

L2-L4

Question 22

Obturator nerve motor innervation (5)

Answer 22

adductor brevis, longus, magus (adductor part), gracilis, obturator internus

Question 23

obturator nerve sensory innervation (3)

Answer 23

hip joint, knee joint, skin of medial upper thigh

Question 24

Psoas major nerve roots

Answer 24

L1-L3

Question 25

Quadratus lumborum nerve roots

Answer 25

L1-L4

Question 26

Lumbosacral plexus nerves (8)

Answer 26

lumbosacral trunk, superior gluteal nerve, inferior gluteal nerve, sciatic nerve, nerve to piriformis muscle, nerve to obturator internus and superior gemellus, nerve to quadratus femoris and inferior gemellus, posterior femoral cutaneous nerve, pudendal nerve

Question 27

Sciatic nerve roots

Answer 27

L4-S3

Question 28

Sciatic nerve exit (3)

Answer 28

greater sciatic foramen, deep to gluteus maximus, below piriformis

Question 29

where does the sciatic nerve split

Answer 29

popliteal fossa apex