Lumbar Plexus Part 2 Flashcards Preview

PNS > Lumbar Plexus Part 2 > Flashcards

Flashcards in Lumbar Plexus Part 2 Deck (35)
Loading flashcards...
1

What branch of the lumbar plexus supplies the sartorius muscle?

the nerve to the sartorius of the anterior division of the femoral nerve

2

What nerve has a lateral branch that communicates with the femoral branch of the genitofemoral nerve?

intermediate cutaneous nerve of the thigh

3

What skin is supplied by the intermediate cutaneous nerve of the thigh?

skin on the anterior thigh down to the knee

4

What skin is supplied by the medial cutaneous nerve of the thigh?

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

5

Some branches of the medial cutaneous nerve of the thigh will supply the skin of the medial leg through communications with what nerve?

saphenous nerve

6

What does the posterior division of the femoral nerve continue as after giving off its branches?

the saphenous nerve

7

Before continuing as the saphenous nerve, what types of branches are given off by the posterior division of the femoral nerve?

muscular branches and vascular branches

8

What muscles are supplied by the muscular branches of the posterior division of the femoral nerve given off before it becomes the saphenous nerve?

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

9

What major blood vessel is supplied by the vascular branches of the posterior division of the femoral nerve (before it becomes the saphenous nerve)?

femoral artery

10

T/F: the saphenous nerve is transmitted through the adductor canal.

true

11

T/F: the saphenous nerve lies lateral to the femoral artery when they exit the adductor canal.

False; the saphenous nerve crosses the artery in the canal and lies medial to the artery upon exiting.

12

What skin of the thigh is supplied by the saphenous nerve?

the skin medial and anterior to the patella

13

What skin in the leg is supplied by the saphenous nerve?

skin of the medial leg and foot

14

What vessel does the saphenous nerve travel with in the leg?

great saphenous vein

15

What reflex mentioned in class is associated with the femoral nerve?

patellar reflex

16

What levels contribute to the obturator nerve?

L2, L3, and L4 (primarily L3)

17

If the prinicpal contributor to the obturator nerve is L3, what is the minimal contributor?

L2

18

T/F: the obturator nerve travels lateral to the psoas major, posterior to the common iliac vesels and descends into the pelvis, traveling on the obturator externus.

False; travels medial to the psoas major, and travels on the obturator internus not externus.

19

Where does the obturator nerve leave the pelvis?

obturator foramen

20

What does the obturator nerve divide into once it exits the pelvis?

anterior and posterior branches

21

What separates the anterior and posterior branches of the obturator nerve?

initially the obturator externus and then by the adductor brevis (Torgerud said this tends to be an exam question)

22

T/F: the obturator nerve branches anteriorly and posteriorly around the obturator internus.

False; should say obturator externus

23

Which adductor muscle separates the branches of the obturator nerve?

adductor brevis

24

The anterior branch of the obturator nerve passes anterior to the obturator externus and the adductor brevis, what muscles does it pass posterior to?

pectineus and adductor longus

25

The anterior branch of the obturator nerve sends some fibers to communcate with the femoral nerve. What does this form?

the subsartorial plexus

26

What does the subsartorial plexus contribute to the supply of?

skin on the medial thigh

27

What is supplied by the termination of the anterior branch of the obturator nerve?

femoral artery

28

Where does the anterior branch of the obturator nerve send articular branches?

the hip joint

29

What four muscles are supplied by the anterior branch of the obturator nerve?

(AGAP between the legs) Adductor longus, Gracillis, Adductor brevis (usually), and Pectineus (usually)

30

What nerve (if present) will the anterior branch (maybe) send fibers to connect with?

accessory obturator nerve