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PNS exam III - mine > Lumbar Plexus - Part 2 > Flashcards

Lumbar Plexus - Part 2 Flashcards

1
Q

Which is the largest branch of the lumbar plexus?

A

The femoral nerve

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2
Q

The femoral nerve contains fibers from what?

A

L2, L3, and L4

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3
Q

The femoral nerve forms where?

A

Posterior to the psoas major

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4
Q

The femoral nerve emerges where?

A

Lateral to psoas and anterior to the iliacus

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5
Q

The femoral nerve pass posterior to what?

A

The inguinal ligament

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6
Q

Once the femoral nerve passes the inguinal ligament it enters what area?

A

The femoral triangle

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7
Q

Once the femoral nerve enters the femoral triangle it is just lateral to what?

A

The femoral artery

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8
Q

From the femoral triangle, the femoral nerve runs inferior and _______ through what?

A

Medically,

Adductor canal

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9
Q

The femoral nerve enters the leg on which side of the knee?

A

medial

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10
Q

The femoral nerve only gives off branches in which two areas?

A

In abdomen and femoral triangle

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11
Q

In which area does the femoral nerve give of muscular branches?

A

abdomen

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12
Q

The muscular branches given off by the femoral nerve in the abdomen supply what?

A

Iliacus

pectineus

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13
Q

The muscular branches given off by the femoral nerve in the abdomen supply the iliacus and pectineus and also sends fibers to what other structure?

A

The femoral artery

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14
Q

One the femoral nerve passes the inguinal ligament it divides into what?

A

Anterior and posterior division

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15
Q

The anterior division of the femoral nerve gives rise to what three nerves?

A

Intermediate cutaneous nerve of the thigh
Medial cutaneous nerve of the thigh
Nerve to the sartorius

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16
Q

The intermediate cutaneous nerve of the thigh and supplies what?

A

Skin on the anterior thigh down to the knee

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17
Q

The lateral branch of the intermediate cutaneous nerve of the thigh communicates with what branch of what nerve?

A

The femoral branch of the genitofemoral nerve

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18
Q

The medial cutaneous nerve of the thigh crosses anterior to what?

A

The femoral artery

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19
Q

The medial cutaneous nerve of the thigh sends branches to supplies what?

A

Skin of medial thigh,
Medial knee,
Knee across to the lateral side of the patella

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20
Q

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

A

saphenous nerve

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21
Q

The nerve to the sartorius supplies what?

A

Sartorius muscle

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22
Q

The posterior division of the femoral nerve gives rise to what types of branches?

A

Muscular branches
Vascular branches
Articular branches

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23
Q

After the posterior division of the femoral artery gives rise to its branches, it becomes what nerve?

A

Saphenous nerve

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24
Q

The muscular branches of the posterior division of the femoral nerve supply what muscle?

A

Quadriceps muscles

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25
Q

The vascular branches of posterior division of the femoral nerve supply what?

A

The femoral artery and its branches

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26
Q

The articular branches of the posterior division of the femoral nerve supply what?

A

The knee joint

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27
Q

What muscles (specifically) are supplied by the muscular branches of the posterior division of the femoral nerve?

A 
Sartorius
Rectum femoris 
vastus lateralis
vastus medialis
vastus intermediate
28
Q

Where are the muscular branches of the femoral nerve given off?

A

In the femoral triangle

29
Q

The saphenous nerve is transmitted through what?

A

The adductor canal

30
Q

The saphenous nerve cross what in the canal and emerges ______ to this structure when exiting the abductor canal?

A

Femoral artery

medial

31
Q

The saphenous nerve supplies what?

A

Skin medial and anterior to the patella

32
Q

In the leg the saphenous nerve travels with what?

A

The great saphenous vein

33
Q

What nerve is the only cutaneous supply for the posterior division of the femoral nerve?

A

The saphenous nerve

34
Q

The saphenous nerve supplies what in the leg?

A

Skin of the medial leg and foot

35
Q

What are some clinical considerations with the femoral nerve?

A

Patellar reflex and

Sensory deficits

36
Q

If there is any discrepancy in the quads (patellar reflex) what nerve should you be thinking?

A

Femoral nerve

37
Q

What sensory deficits could show up with the femoral nerve??

A

Paresthesia (tingling numbness), 2 pt touch discrimination, pain, temp, unilateral issues

38
Q

The obturator nerve contains fibers from what?

A

L2, L3, and L4

39
Q

What nerve is the principal contributor to the obturator nerve?

40
Q

What nerve is the minimal contributor the obturator nerve?

41
Q

The obturator nerve travels medial to what?

A

Psoas major

42
Q

The obturator nerve travels posterior to what?

A

Common iliac vessels

43
Q

The obturator nerve descends into the pelvis, traveling on what?

A

Obturator internus

44
Q

The obturator nerve leaves the pelvis through what?

A

The obturator foramen

45
Q

After leaving the obturator foremen, the obturator nerve divides into a _____ and ___ .

A

Posterior and anterior branch

46
Q

The anterior and posterior branch of the obturator nerve are separated initially by what muscle? And then by what muscle?

A

Obturator externus

Adductor brevis

47
Q

The anterior branch of the obturator nerve travels anterior to what?

A

Obturator externus

Adductor brevis

48
Q

The anterior branch of the obturator nerve travels posterior to what muscles?

A

Pectineus

Adductor longus

49
Q

The anterior branch of the obturator nerve will communicate with branches of what nerve?

A

Femoral nerve

50
Q

When the anterior branch sends branches to communicate with the branches of the femoral nerve, what does this form?

A

subsartorial plexus

51
Q

The subsartorial plexus contributes to the supply of what?

A

Skin on the medial thigh

52
Q

The termination of the anterior branch of the obturator nerve supplies what?

A

Femoral artery

53
Q

The anterior branch of the obturator nerve sends articular branches to what?

A

The hip joint

54
Q

The anterior branch sends muscular branches to what main 2 muscles?

A

Abductor longus

gracilis

55
Q

The muscular branches of the obturator nerve can also supply what other two muscles?

A

Pectineus

Abductor brevis

56
Q

What muscle does the muscular branches of the obturator nerve (anterior branch) share with another nerve? What other nerve supplies this muscle?

A

Pectineus

Femoral nerve

57
Q

The anterior branch of the obturator nerve may send fibers to connect with what nerve, if present?

A

Accessory obturator nerve

58
Q

The anterior branch of the obturator nerve may send fibers to communicate with what other two nerves off of the femoral nerve?

A

Medial cutaneous nerve

Saphenous nerve

59
Q

If the anterior branch of the obturator nerve sends fibers to communicate with the medial cutaneous nerve and the saphenous nerve, what will it contribute supply to?

A

Skin on upper medial side of the leg

60
Q

The posterior branch of the obturator nerve travels through what?

A

Obturator externus

61
Q

The posterior branch of the obturator nerve travels through the obturator externus posterior to ___ and anterior to ____?

A

Adductor brevis

Adductor magnus

62
Q

The posterior branch of the obturator nerve will send muscular branches to supply what two muscles?

A

Obturator externus

Adductor magnus

63
Q

If the anterior branch does not supply this muscle the posterior branch of the obturator nerve will. What muscle is this?

A

Adductor brevis

64
Q

The posterior division of the obturator nerve supplies articular branches to what?

A

The knee joint

65
Q

All muscles supplied by the obturator nerve have what action?

A

Adduction of hip

66
Q

Problems with the obturator nerve resulting in muscular weakness will show what?

A

Hip adduction weakened

67
Q

What sensory deficits can be seen with a compromised obturator nerve?

A

Medial aspect of thigh (overlap with branches of femoral)

PNS exam III - mine (12 decks)

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