Lower Limbs - Nerves and Vessels

Question 1

Where do the arteries of the lower limb begin?

Answer 1

Junction between hip and thigh

Question 2

Artery from which lower limb arteries split

Answer 2

External iliac artery

Question 3

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

Answer 3

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

Question 4

Main branch of femoral artery

Answer 4

Profunda femoris

Question 5

Superficial veins of lower limb 1) 2) 3)

Answer 5

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

Question 6

Deep veins of the lower limb 1) 2)

Answer 6

1) Venous sinuses in soleus 2) Venae comitantes

Question 7

Path of lower limb lymph drainage

Answer 7

Follows venous vessels

Question 8

Path of lower limb lymph drainage through lymph nodes

Answer 8

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

Question 9

Major plexus supplying lower limb

Answer 9

Lumbosacral plexus

Question 10

Structure giving rise to lumbosacral plexi

Answer 10

Posterior rami

Question 11

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

Answer 11

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

Question 12

Nerve segments supplying femoral nerve

Answer 12

L2m L3, L4

Question 13

Muscles innervated by femoral nerve

Answer 13

Quadriceps

Question 14

Skin innervated by femoral nerve

Answer 14

Medial thigh, medial border of foot

Question 15

How does the femoral nerve enter the thigh?

Answer 15

Passing inferior to inguinal ligament

Question 16

Spinal segments supplying the obdurator nerve

Answer 16

L2, L3, L4

Question 17

Muscles innervated by obdurator nerve

Answer 17

Adductor muscles of thigh

Question 18

Skin innervated by obdurator nerve

Answer 18

Medial thigh, patch not innervated by femoral nerve

Question 19

Clinical significance of obdurator nerve

Answer 19

Conveys referred pain from the ovaries to medial thigh

Question 20

Which nerve conveys referred pain form the ovaries?

Answer 20

Obdurator nerve

Question 21

How does obdurator nerve enter the thigh?

Answer 21

Through the obdurator canal of the hip bone

Question 22

Spinal segments supplying sciatic nerve

Answer 22

L4, L5, S1, S2, S3

Question 23

Muscles innervated by sciatic nerve

Answer 23

Posterior thigh muscles

Question 24

Structures into which the sciatic nerve splits 1) 2)

Answer 24

1) Tibial nerve 2) Common fibular nerve

Question 25

Where does the sciatic nerve split into two major branches?

Answer 25

Major popliteal fossa

Question 26

Where do injections into the buttock need to be administered?

Answer 26

Upper, outer quadrant

Question 27

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

Answer 27

So that the sciatic nerve isn't accidentally pricked

Question 28

Spinal segments supplying tibial nerve

Answer 28

T5, S1, S2, S3

Question 29

Where does the tibial nerve originate?

Answer 29

Popliteal fossa

Question 30

Muscles innervated by tibial nerve

Answer 30

All posterior leg

Question 31

Nerve from which medial and lateral plantar nerves arise from

Answer 31

Tibial nerve

Question 32

What does the tibial nerve split into at the ankle?

Answer 32

Lateral, medial plantar nerves

Question 33

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

Answer 33

Ankle

Question 34

Tarsal tunnel syndrome

Answer 34

Compression of tibial nerve in tarsal tunnel

Question 35

Jogger's foot

Answer 35

Compression of plantar nerves below medial arch

Question 36

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

Answer 36

Jogger's foot

Question 37

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

Answer 37

Tarsal tunnel syndrome

Question 38

Spinal segments supplying common fibular nerve

Answer 38

L4, L5, S1, S2

Question 39

Where does the common fibular nerve originate?

Answer 39

Popliteal fossa

Question 40

Where does the common fibular nerve travel

Answer 40

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

Question 41

Muscles supplied by common fibular nerve

Answer 41

Lateral, anterior muscles of leg

Question 42

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

Answer 42

Deep, superficial fibular nerves

Question 43

What can anterior compartment syndrome lead to?

Answer 43

Compression of the common fibular nerve

Question 44

How can the common fibular nerve be compressed?

Answer 44

Anterior compartment syndrome in leg

Question 45

Effects of compressed common fibular nerve

Answer 45

Foot drop

Question 46

What can cause foot drop?

Answer 46

Compression of common fibular nerve

Question 47

Most common intervertebral disc to prolapse

Answer 47

L4,L5 or L5/S1

Question 48

Effects of L4/L5, L5/S1 disc prolapse

Answer 48

Irritation of sciatic nerve

Question 49

Clinical symptoms of compression of sciatic nerve

Answer 49

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

Question 50

Answer 50

Question 51

Answer 51

Question 52

Answer 52