Sem 4- Nerves Of Lower Limb

Front 1

Which rami supply lower limb?

Back 1

Ventral

Front 2

What are the 2 plexi of the lower limb?

Back 2

-Lumbar(L1-L4)
-Sacral(S1-S4)

Front 3

Where does the lumbar plexus happen?

Back 3

Within psoas.

Front 4

Lumbar plexus is formed by

Back 4

Ventral rami of L1-L4 and within psoas.

Front 5

Where can you see the nerves exiting?

Back 5

Under anterior or medial border of psoas/ lateral border onto ant. surface

Front 6

What are the 2 nerves that emerge from the lateral border of psoas onto iliacus?

Back 6

-Lateral cutaneous nerve of thigh.(L2,L3)
-femoral nerve

Front 7

What is the pathway of the lateral cutaneous nerve of the thigh and what does it do?

Back 7

-Swings onto iliacus,pops beneath inguinal ligt. and supplies skin down lateral side of thigh.

Front 8

Where does the femoral n. run?

Back 8

Runs in groove between psoas and iliacus.(Nerve of ant. compartment of thigh-EXTENSORS)

Front 9

Femoral nerve supplies

Back 9

Anterior compt. of thigh(EXTENSORS)--> post. divisions.

Front 10

What is the 3rd branch of the lumbar plexus?

Back 10

Genitofemoral nerve(from ant. surface of psoas)

Front 11

What does the femoral branch of the genitofemoral n. supply?

Back 11

Area of skin overlying the femoral triangle.

Front 12

What does the genital branch of the genitofemoral n. supply?

Back 12

Spermatic cord.

Front 13

Sacral plexus is joined by what?

Back 13

Lumbosacral trunks(part of lumbar plexus left over)

Front 14

What is the 4th nerve of lumbar plexus?

Back 14

Obturator nerve.

Front 15

What is the course of the obturator n. ?

Back 15

Starts on the MEDIAL border of psoas and runs into pelvis and through obturator canal.

Front 16

What is the nerve of the ADDUCTOR(medial)compt. of the thigh?

Back 16

Obturator nerve.

Front 17

What is the nerve of the ant. division of thigh?

Back 17

Femoral nerve

Front 18

Femoral n. is made up of

Back 18

Post. division fibres which give L2,L3,L4

Front 19

Femoral n.

Back 19

L2,L3,L4

Front 20

Femoral n. runs from

Back 20

Lateral border of thigh.

Front 21

Femoral artery and vein are enclosed in

Back 21

Femoral sheath.

Front 22

Femoral nerve is long.

Back 22

False.It's short-2.5 cm.

Front 23

What is the orientation of the femoral n. wrt the artery and vein?

Back 23

Nerve--> Artery---> Vein.

Front 24

What happens to femoral n. beneath inguinal ligt.?

Back 24

It breaks up into terminal branches(motor to ant. cpt of leg)

Front 25

Which muscles do the motor branch of the femoral n. supply?

Back 25

Sartorius
Pectineus
Quads

Front 26

Which branch of femoral n. goes down adductor canal?

Back 26

Saphenous n.

Front 27

When does the saphenous n. become cutaneous?

Back 27

On medial side of leg and foot upto 1st metatarsal joint.

Front 28

Obturator n. is made up of

Back 28

Anterior divisions-L2,L3,L4

Front 29

Obturator n. is

Back 29

nerve of the adductor region of thigh.

Front 30

From where does the obturator n. emerge?

Back 30

Medial side of psoas.

Front 31

Obturator n. goes through which foramen?

Back 31

Obturator foramen in pelvis.

Front 32

What is the sensory supply of the obturator n.?

Back 32

-Peritoneum of walls of pelvis
- Area of skin around adductors.(medial side of thigh)

Front 33

Sciatic n. supplies

Back 33

Remaining part of leg and thigh.

Front 34

Which branch is the sciatic n. from?

Back 34

Sacral plexus(L4-L5,S1-S3)

Front 35

How does the sciatic n. emerge into the gluteal region?

Back 35

From beneath inferior border of piriformus.

Front 36

Sciatic n. runs

Back 36

Vertically down the back of thigh and directly behind hip joint.

Front 37

Which nerve is endangered during a post. dislocation of hip joint/

Back 37

Sciatic nerve.

Front 38

Superior gluteal n.,branch of the sciatic n., supplies which muscles?

Back 38

Gluteus medius and minimus.

Front 39

Which muscle does the inferior gluteal nerve supply?

Back 39

Gluteus maximus.(below piriformus)

Front 40

Posterior gluteal nerve of thigh is a

Back 40

Cutaneous nerve and supplies skin down back of leg.

Front 41

When does the sciatic n.(more like 2 nerves in 1 sheath) divide?

Back 41

2/3 way down

Front 42

Into what does the sciatic n. divide?

Back 42

-Tibial nerve
-Common peroneal nerve

Front 43

Which nerve supply hamstrings?

Back 43

Sciatic n.(motor)-tibial compartment of sciatic n. excluding short head of biceps,supplied by common peroneal n.

Front 44

Short head of biceps is supplied by

Back 44

Common peroneal nerve.

Front 45

Which nerve goes down through popliteal fossa with vessels?

Back 45

Tibial nerve.

Front 46

What is the orientation of neurovasculature in popliteal fossa?

Back 46

Artery--->Vein--->Nerve

Front 47

What is the course of the common peroneal nerve?

Back 47

Runs down lateral side of popliteal fossa,next to border of biceps femori--->winds round neck of fibula---> sinks into perineus longus.

Front 48

Which nerve supplies the posterior compartment of the leg(calf) ?

Back 48

Tibial nerve

Front 49

Which group of muscles are present in the calf region of the leg?

Back 49

Flexors

Front 50

Flexor muscles in the leg are supplies by

Back 50

Anterior division fibres made up of L4-L5,S1-S3.

Front 51

Tibial n. is a direct continuation straight down of sciatic n.

Back 51

True

Front 52

Below the knee, which nerve runs in the posterior compartment of the leg?

Back 52

Tibial nerve

Front 53

What is the course of the tibial nerve?

Back 53

-Tucks in beneath fibrous arch of soleus and runs down in deep muscles(behind post. popliteal vessels)
-Passes behind medial malleolus and onto sole of foot.

Front 54

Tibial n. divides into plantar branches

Back 54

True

Front 55

Which branch of the sciatic n. supplies anterior and lateral compartment of leg?

Back 55

Common peroneal nerve.

Front 56

Common peroneal nerve is made up of

Back 56

Posterior division fibres-L4/L5,S1/S2

Front 57

Which movements are associated with common peroneal nerve?

Back 57

Eversion and extension.

Front 58

Into what does the common peroneal n. divide into?

Back 58

-Superficial peroneal n.
-Deep peroneal n.

Front 59

Deep peroneal n. supplies

Back 59

ANTERIOR compartment of leg.

Front 60

Superficial peroneal n. supplies

Back 60

Lateral cpt--> Evertor cpt.

Front 61

Superficial peroneal n. supplies perineus longus and brevis.

Back 61

True

Front 62

Deep peroneal n. follow anterior tibial vessels onto

Back 62

Dorsum of foot.

Front 63

Deep peroneal n. runs beneath

Back 63

Extensor retinaculum.

Front 64

Each of the major muscle groups or cpts in lower limb is primarily innervated by

Back 64

One or more peripheral nerves that originates from lumbar and sacral plexuses.

Front 65

What supply large muscles in the gluteal region?

Back 65

Superior and Inferior gluteal nerves.

Front 66

What supplies ant. cpt of thigh?

Back 66

Femoral nerve

Front 67

Medial cpt of thigh is supplied by

Back 67

Obturator nerve

Front 68

Tibial part of sciatic nerve supplies

Back 68

-Post. cpt of thigh
-Post. cpt of leg
-Sole of foot.(except short head of biceps)

Front 69

Common peroneal part of sciatic n. supplies

Back 69

-Anterior cpt of leg
-Lateral cpt. of leg
-Dorsum of foot.

Front 70

Each of the major peripheral nerves that originates from lumbar and sacral plexuses carries

Back 70

Sensory info. from an area of skin.

Front 71

Which area of skin does the femoral n. innervate?

Back 71

-Skin on Ant./Medial thigh
-Skin on medial side of leg and foot.

Front 72

Obturator n . innervates

Back 72

Medial side of thigh.

Front 73

Tibial part of sciatic n. innervates

Back 73

Lateral side of ANKLE & FOOT.

Front 74

Common peroneal n. innervates which part of skin?

Back 74

-Lateral side of LEG
-Dorsum of foot.

Front 75

Lat. cutaneous n. of thigh and post. cutaneous n. of thigh branch directly from plexus.

Back 75

True

Front 76

Knee extension is

Back 76

L3, L4

Front 77

Knee flexion is

Back 77

L5, S1

Front 78

Inversion is

Back 78

L4

Front 79

Eversion is

Back 79

L5, S1

Front 80

Dorsiflexion of ankle is

Back 80

L4, L5

Front 81

Plantar flexion is

Back 81

S1, S2