lumbar and lumbosacral plexi

Question 1

what nerve branches supply the superior clunial nerve

Answer 1

dorsal rami of L2 and L3

Question 2

what area does the superior clunial nerve supply

Answer 2

central and superior gluteal region

Question 3

what nerve branches supply the middle clunial nerve

Answer 3

dorsal rami of S2, S3, and S4

Question 4

what area does the middle clunial nerve supply

Answer 4

medial portion of gluteal region

Question 5

what nerve branches supply the inferior clunial nerve

Answer 5

branch of femoral cutaneous

Question 6

what area does the inferior clunial nerve supplt

Answer 6

inferior portion

Question 7

what spinal branches are in the lumbar plexus

Answer 7

ventral rami of L1-L4

Question 8

what nerve roots supply iliohypogastric

Answer 8

L1

Question 9

what does iliohypogastric innervate (sensory and motor)

Answer 9

• motor: lower abdominal wall

- sensory: skin to abdominal wall above pubic bone

Question 10

what nerve roots supply ilioinguinal

Answer 10

L1

Question 11

what does ilioinguinal innervate (sensory and motor)

Answer 11

motor: lower portion of abdominal wall

- sensory: root of penis, ant scrotum, mons pubis, ant labis

Question 12

what nerve roots supply genitofemoral

Answer 12

L1 and L2

Question 13

what motor innervation does the genital branch of genitofemoral give

Answer 13

cremaster muscles in scrotum

Question 14

what sensory innervation does the femoral branch of genitofemoral give

Answer 14

skin of upper thigh uder inguinal ligament

Question 15

what is the cremaster reflex?

Answer 15

rubbing L1 dermatome to activate cremaster muscles

Question 16

what nerve roots supply lateral femoral cutaneous

Answer 16

L2 and L3

Question 17

what sensory innervation does lateral femoral cutaneous give

Answer 17

skin covering lateral thigh

Question 18

clinial correlation for lateral femoral cutaneous nerve

Answer 18

meralgia paresthetica

-compression btwn inguinal lig and ASIS

Question 19

what nerve roots supply femoral nerve

Answer 19

L2, L3 and L4

Question 20

what is the motor and sensory innervation for femoral nerve

Answer 20

motor: ant compartment of thigh
sensory: ant and medial thigh and medial leg

Question 21

what nerve roots supply obturator nerve

Answer 21

L2, L3, and L4

Question 22

what is the motor and sensory innervation for obturator nerve

Answer 22

• motor: medial compartment of thigh

- sensory; medial thigh near knee

Question 23

what nerve roots are part of the lumbosacral plexus

Answer 23

L4-S4

Question 24

what nerve roots supply superior gluteal nerve

Answer 24

L4, L5, and S1

Question 25

what muscles does superior gluteal innervate

Answer 25

tensor fascia lata
gluteus medius
gluteus minimus

Question 26

what nerve roots supply inferior gluteal

Answer 26

L5, S1 and S2

Question 27

what muscle does inferior gluteal innervate

Answer 27

gluteus maximus

Question 28

what nerve roots supplies the nerve to obturator internus

Answer 28

L5, S1, S2

Question 29

what muscles does the obturator internus innervate

Answer 29

• obturator internus

- superior gemellus

Question 30

what nerve roots supply nerve to quadratus femoris

Answer 30

L4, L5, S1

Question 31

what muscles does the nerve to quadratus femoris innervate

Answer 31

• quadratus femoris

- inferior gemellus

Question 32

what nerve roots supply pudendal nerve

Answer 32

S2, S3, S4

Question 33

what muscles does the pudendal nerve innervate

Answer 33

• muscles assocaited w/ external genetalia

- sphincters of anus and urethra

Question 34

what nerve roots supply the sciatic nerve

Answer 34

L4-S4

Question 35

what nerve roots supply the posterior femoral cutaneous

Answer 35

S1, S2, S3

Question 36

what does the posterior femoral cutaneous innervate

Answer 36

skin of posterior thigh and popliteal region

Question 37

peripheral nerve lesion vs radioculopathy

Answer 37

periph: loss of function of muscle and several dermatomes
radio: sensation loss in one area and weak muscle