unit 6: lumbar plexus

Question 1

lumbar plexus is formed by the APR of __-__ and part of ___, with a contribution from __ via communication w/ the L1

Answer 1

L1-L3
L4
T12

Question 2

___ branches from the APR supply the quadratus lumborum, psoas major & minor (if present)

Answer 2

muscular

Question 3

muscular branch L1 will supply the (2)

Answer 3

quadratus lumborum

psoas minor

Question 4

muscular branch L3 will supply the (3)

Answer 4

quadratus lumborum

psoas major & minor

Question 5

muscular branches L3 & L4 supply the (2)

Answer 5

quadratus lumborum

psoas major

Question 6

the ___ nerve contains fibers from T12 & L1 and travels anterior and inferior bt quad lumborum & the kidney

Answer 6

iliohypogastric

Question 7

iliohypogastric travels thru the __ __ muscle and BT it and the __ ___ oblique

Answer 7

transverse abdominal

internal abdominal

Question 8

branch given off the iliohypogastric that supplies sensory to the posterolateral gluteal region

Answer 8

lateral cutaneous

Question 9

iliohypogastric continues as the __ __ branch which supplies the skin of the pubic region

Answer 9

anterior cutaneous

Question 10

two muscles supplied by the iliohypogastric AND ilioinguinal

Answer 10

internal abdominal oblique

transverse abdominal

Question 11

the ___ nerve contains fibers from T12 and L1 and enters and is transmitted thru the inguinal canal

Answer 11

ilioinguinal

Question 12

the ilioinguinal nerve leaves the inguinal canal thru the __ ___ ___ and travels with the spermatic cord (round lig/ female)

Answer 12

superficial inguinal ring

Question 13

ilioinguinal n. supplies sens to the skin of the

Answer 13

upper medial thigh

Question 14

ilioinguinal n. supplies sensory to these 2 areas in MEN

Answer 14

base of penis

anterior scrotum

Question 15

ilioinguinal n. supplies sensory to these 2 areas in FEMALES

Answer 15

mons pubis

labium majus

Question 16

nerve containing fibers from L1/L2 that passes anterior thru the posas major and divides into genital and femoral branches

Answer 16

genitofemoral nerve

Question 17

the GENITAL branch enters/travels thru the __ canal, then leaves the canal to provide motor supply to the __ muscle

Answer 17

inguinal

cremaster

Question 18

the ___ branch supplies skin of superior anterior scrotum (M) or mons pubis & labium majus (F)

Answer 18

genital

Question 19

medial aspect of upper thigh is touched, teste on that side will elevate: reflex name

Answer 19

cremasteric

Question 20

the ___ branch passes into thigh post to inguinal ligament and supplies SKIN of the upper anterior thigh

Answer 20

femoral

Question 21

purely sensory nerve containing fibers from L2&L3 that supplies skin of lat thigh superior to knee

Answer 21

lateral cutaneous nerve of the thigh

Question 22

lateral cutaneous nerve of the thigh leaves the abdominal cavity by passing under the ___ __, anterior to sartorius, and THRU __ __ to reach skin

Answer 22

inguinal ligament

fascia lata

Question 23

largest branch of the lumbar plexus, containing fibers from L2-L4

Answer 23

femoral n.

Question 24

the femoral nerve passes posterior to the __ __ and enters the __ __ just lateral to the femoral artery

Answer 24

inguinal ligament

femoral triangle

Question 25

femoral n. runs inferior and medially thru the ___ canal and into the leg, medially to the knee

Answer 25

adductor

Question 26

the femoral n. gives off branches ONLY in the ___ & __ ___

Answer 26

abdomen | femoral triangle

Question 27

in the abdomen, the femoral nerves gives off muscular branches to the femoral artery, and these 2 muscles

Answer 27

iliacus | pectineus

Question 28

nerve off the anterior division of the femoral nerve that divides into two branches tat supplies the skin on the anterior thigh down to the knee

Answer 28

intermediate cutaneous nerve of the thigh

Question 29

the __ branch off the intermediate cutaneous nerve of the thigh will communicate w/ the femoral branch of the genitofemoral nerve

Answer 29

lateral

Question 30

nerve off the ant division of the femoral n. that crosses ant to the femoral art & sends branches to supply the skin of the medial thigh, medial knee, and knee to the lat side of the patella

Answer 30

medial cutaneous nerve of the thigh

Question 31

some branches off the medial cutaneous nerve of the thigh will supply the skin of the medial leg thru communications with the __ nerve

Answer 31

saphenous

Question 32

branch off the anterior division of the femoral nerve that supplies the sartorious

Answer 32

nerve to the sartorious

Question 33

the post division of the femoral n. gives rise to ___ branches to the QUADS and __ branches that supply the femoral artery and its branches and the knee joint

Answer 33

muscular | vascular

Question 34

the posterior division of the femoral nerve continues as the ___ nerve

Answer 34

saphenous

Question 35

5 muscles supplied by posterior division femoral muscular branches given off in the femoral triangle

Answer 35

``` sartorius rectus femoris vastus lateralis vastus medialis vastus intermedialis ```

Question 36

saphenous nerve is transmitted thru the __ canal, where it crosses the femoral artery so the nerve lies medial to it as they emerge

Answer 36

adductor

Question 37

saphenous nerve supplies skin medial and anterior to the ___

Answer 37

patella

Question 38

in the leg, saphenous n. travels with the __ __ ___ and supplies skin on medial leg and foot

Answer 38

great saphenous vein