Lower Limbs - Nerves and Vessels Flashcards Preview

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Flashcards in Lower Limbs - Nerves and Vessels Deck (52):
1

Where do the arteries of the lower limb begin?

Junction between hip and thigh

2

Artery from which lower limb arteries split

External iliac artery

3

Arteries splitting from external iliac artery: 1) 2) 3) 4)

1) Femoral 2) Popliteal 3) Anterior tibial 4) Posterior tibial

4

Main branch of femoral artery

Profunda femoris

5

Superficial veins of lower limb 1) 2) 3)

1) Dorsal venous arch 2) Great saphenous 3) Small saphenous

6

Deep veins of the lower limb 1) 2)

1) Venous sinuses in soleus 2) Venae comitantes

7

Path of lower limb lymph drainage

Follows venous vessels

8

Path of lower limb lymph drainage through lymph nodes

Superficial inguinal node --> Deep inguinal node --> Drains through nodes beside aorta to thoracic duct

9

Major plexus supplying lower limb

Lumbosacral plexus

10

Structure giving rise to lumbosacral plexi

Posterior rami

11

Nerves arising from lumbosacral plexi 1) 2) 3) 4)

1) 2 x Gluteal nerves 2) Femoral nerve 3) Obdurator nerve 4) Sciatic nerve

12

Nerve segments supplying femoral nerve

L2m L3, L4

13

Muscles innervated by femoral nerve

Quadriceps

14

Skin innervated by femoral nerve

Medial thigh, medial border of foot

15

How does the femoral nerve enter the thigh?

Passing inferior to inguinal ligament

16

Spinal segments supplying the obdurator nerve

L2, L3, L4

17

Muscles innervated by obdurator nerve

Adductor muscles of thigh

18

Skin innervated by obdurator nerve

Medial thigh, patch not innervated by femoral nerve

19

Clinical significance of obdurator nerve

Conveys referred pain from the ovaries to medial thigh

20

Which nerve conveys referred pain form the ovaries?

Obdurator nerve

21

How does obdurator nerve enter the thigh?

Through the obdurator canal of the hip bone

22

Spinal segments supplying sciatic nerve

L4, L5, S1, S2, S3

23

Muscles innervated by sciatic nerve

Posterior thigh muscles

24

Structures into which the sciatic nerve splits 1) 2)

1) Tibial nerve 2) Common fibular nerve

25

Where does the sciatic nerve split into two major branches?

Major popliteal fossa

26

Where do injections into the buttock need to be administered?

Upper, outer quadrant

27

Why do injections into the buttock need to be administered to the outer, upper quadrant?

So that the sciatic nerve isn't accidentally pricked

28

Spinal segments supplying tibial nerve

T5, S1, S2, S3

29

Where does the tibial nerve originate?

Popliteal fossa

30

Muscles innervated by tibial nerve

All posterior leg

31

Nerve from which medial and lateral plantar nerves arise from

Tibial nerve

32

What does the tibial nerve split into at the ankle?

Lateral, medial plantar nerves

33

Where does the tibial nerve split into the medial and lateral plantar nerves?

Ankle

34

Tarsal tunnel syndrome

Compression of tibial nerve in tarsal tunnel

35

Jogger's foot

Compression of plantar nerves below medial arch

36

What does compression of plantar nerves below plantar arch result in?

Jogger's foot

37

What does compression of tibial nerve in the tarsal tunnel result in?

Tarsal tunnel syndrome

38

Spinal segments supplying common fibular nerve

L4, L5, S1, S2

39

Where does the common fibular nerve originate?

Popliteal fossa

40

Where does the common fibular nerve travel

Behind the fibular head, down the lateral compartment of the leg

41

Muscles supplied by common fibular nerve

Lateral, anterior muscles of leg

42

How does the common fibular nerve innervate lateral and anterior muscles of leg?

Deep, superficial fibular nerves

43

What can anterior compartment syndrome lead to?

Compression of the common fibular nerve

44

How can the common fibular nerve be compressed?

Anterior compartment syndrome in leg

45

Effects of compressed common fibular nerve

Foot drop

46

What can cause foot drop?

Compression of common fibular nerve

47

Most common intervertebral disc to prolapse

L4,L5 or L5/S1

48

Effects of L4/L5, L5/S1 disc prolapse

Irritation of sciatic nerve

49

Clinical symptoms of compression of sciatic nerve

1) Plantar flexion, flexion of big toe might be affected 2) Muscle wastage of gastrocnemius, soleus 3) Ankle jerk diminished or absent

50

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