Lumbar plexus

Question 0

how does the lumbar plexus receive contribution from T12

Answer 0

by communication with the L1 nerve

Question 1

what forms the lumbar plexus

Answer 1

anterior primary rami of L1-L3 and part of L4

Question 2

what muscles are supplied by the muscular branches of the anterior primary rami of the lumbar plexus

Answer 2

quadratus lumborum, psoas major and psoas minor

Question 3

L1 muscular branches will supply what muscles

Answer 3

quadratus lumborum and psoas minor

Question 4

L2 muscular branches will supply what muscles

Answer 4

quadratus lumborum and both psoas muscles

Question 5

L3 and L4 muscular branches will supply what muscles

Answer 5

quadratus lumborum and psoas major

Question 6

the iliohypogastric nerve contains fibers from what spinal nerves

Answer 6

T12 and L1

Question 7

after the iliohypogastric nerve gives off the lateral cutaneous branch what does it continue as

Answer 7

the anterior cutaneous branch

Question 8

what does the anterior cutaneous branch (from the iliohypgsatric nerve) supply

Answer 8

skin of the pubic region

Question 9

what does the lateral cutaneous branch of the iliohypogastric nerve supply

Answer 9

posterolateral gluteal region

Question 10

what roots make up the ilioinguinal nerve

Answer 10

T12 and L1

Question 11

what does the ilioinguinal nerve supply with sensory innervation

Answer 11

skin of the upper medial thigh, base of penis, anterior scrotum (in males), mons pubis and labium majus (in females)

Question 12

what muscles does the ilioinguinal nerve supply

Answer 12

internal abdominal oblique muscle , and transverse abdominal muscles

Question 13

what muscles does the iliohypogastric nerve supply

Answer 13

internal abdominal oblique, and transverse abdominal

Question 14

what roots is the genitofemoral nerve composed of

Answer 14

L1 and L2

Question 15

what two branches does the genitofemoral nerve divide into

Answer 15

gential branch and femoral branch

Question 16

what does the genital branch of the genitofemoral nerve supply with motor innervation

Answer 16

cremaster muscle

Question 17

what does the genital branch of the genitofemoral nerve supply with sensory innervation

Answer 17

skin of the superior-anterior scrotum(in males), skin of the mons pubs and labium majus(in females)

Question 18

what does the femoral branch of the genitofemoral nerve supply

Answer 18

skin of the upper anterior thigh

Question 19

what roots is the lateral cutaneous nerve of the thigh composed of

Answer 19

L2 and L3

Question 20

what does the lateral cutaneous nerve of the thigh supply

Answer 20

skin of the lateral thigh, superior to the knee

Question 21

what is the largest branch of the lumbar plexus

Answer 21

femoral nerve

Question 22

what roots is the femoral nerve composed of

Answer 22

L2,L3, and L4

Question 23

what branches does the femoral nerve give off in the abdomen

Answer 23

muscular branches to the iliacus and the pectineus as well as a few fibers to the femoral A.

Question 24

what are the 3 nerves that arise from the anterior division of the femoral nerve

Answer 24

the intermediate cutaneous nerve of the thigh, the medial cutaneous nerve of the thigh, and the nerve to the sartorius

Question 25

what does the intermediate cutaneous nerve of the thigh supply

Answer 25

skin on the anterior thigh down to the knee

Question 26

what will the lateral branch of the intermediate cutaneous nerve of the thigh communicate with

Answer 26

the femoral branch of the genitofemoral nerve

Question 27

what does the medial cutaneous nerve of the thigh supply

Answer 27

skin of the medial thigh, medial knee, and knee across to the lateral side of the patella

Question 28

the medial cutaneous nerve of the thigh communicates with the saphenous nerve to supply what?

Answer 28

skin of the medial leg through communications with the saphenous nerve

Question 29

what muscle does the nerve to the sartorius supply

Answer 29

the sartorius

Question 30

what muscles does the posterior division of the femoral nerve innervate

Answer 30

sartorius, and quadriceps (rectus femoris, vastus lateralis, vastus medialis, vastus intermedialis)

Question 31

what does the vascular branches of the posterior division supply

Answer 31

the femoral artery and its branches

Question 32

what does the saphenous nerve supply

Answer 32

skin medial and anterior to the patella, skin of the medial leg and foot

Question 33

what nerve is the patellar reflex testing

Answer 33

femoral nerve

Question 34

in most cases what do sensory dificits in the lumbars going to relate back to

Answer 34

disc issues

Question 35

what roots make up the obturator nerve

Answer 35

L2,L3, an L4

Question 36

what is the principal contributor to the obturator nerve

Answer 36

L3

Question 37

after the obturator nerve splits into an anterior and posterior branch what separates them

Answer 37

initially the obturator externus and then the adductor brevis

Question 38

branches that are sent from the obturator nerve to communicate with the femoral nerve form what?

Answer 38

the subsartorial plexus

Question 39

what does the subsartorial plexus contribute to

Answer 39

the skin on the medial thigh

Question 40

what does the terminal portion of the anterior branch of the obturator nerve supply

Answer 40

the femoral artery

Question 41

the anterior branch of the obturator nerves sends articular branches to what joint

Answer 41

the hip joint

Question 42

the anterior branch of the obturator nerves sends muscular branches to what muscles

Answer 42

adductor longus, gracilis, pectineus (usually), adductor brevis(usually)

Question 43

if the accessory obturator nerve is present what may send fibers to connect with it

Answer 43

the anterior branch of the obturator nerve

Question 44

if the anterior branch of the obturator nerves sends fibers to communicate with the medial cutaneous nerve of the thigh and the saphenous nerve what will it contribute supply to

Answer 44

the skin on the upper medial side of the leg

Question 45

what muscles does the posterior branch of the obturator nerve supply

Answer 45

obturator externus and adductor magnus as well as the adductor brevis if it is not already supplied by the anterior branch

Question 46

what joint does the posterior branch of the obturator n send articular fibers to

Answer 46

the knee joint

Question 47

what are clinical considerations associated with the lumbar plexus

Answer 47

muscular weakness, and sensory deficits