Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Nerves Supply > Nerve Of The Leg > Flashcards

Nerve Of The Leg Flashcards

1
Q

What is the origin of the Lateral Femoral Cutaneous Nerve?

A

It arises from the dorsal (posterior) divisions of L2 and L3.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Where does the Lateral Femoral Cutaneous Nerve emerge from?

A

It emerges from the lateral border of the psoas major.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What muscle does the Lateral Femoral Cutaneous Nerve cross obliquely?

A

Iliacus muscle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What ligament does the Lateral Femoral Cutaneous Nerve run under?

A

Inguinal ligament.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Into what two branches does the Lateral Femoral Cutaneous Nerve divide in the thigh?

A

Anterior branch and posterior branch.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How far below the inguinal ligament does the anterior branch of the Lateral Femoral Cutaneous Nerve become superficial?

A

About 10 cm.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What areas does the anterior branch of the Lateral Femoral Cutaneous Nerve supply?

A

Skin of the anterior and lateral parts of the thigh, extending to the knee.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does the posterior branch of the Lateral Femoral Cutaneous Nerve do?

A

It pierces the fascia late and subdivides into filaments supplying the skin.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What surfaces of the thigh does the posterior branch of the Lateral Femoral Cutaneous Nerve supply?

A

Lateral and posterior surfaces of the thigh.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the range of the area supplied by the posterior branch of the Lateral Femoral Cutaneous Nerve?

A

From the greater trochanter at the hip to the middle of the thigh.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

From which spinal levels does the femoral nerve arise?

A

L2-4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What muscles does the femoral nerve descend through?

A

Psoas major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What ligament does the femoral nerve pass beneath to enter the femoral triangle?

A

Inguinal ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Into how many divisions does the femoral nerve split in the femoral triangle?

A

Two divisions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the two divisions of the femoral nerve?

A
  • Anterior division
  • Posterior division
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What types of branches does the anterior division of the femoral nerve give off?

A
  • Anterior cutaneous branches
  • Muscular branches
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which two nerves are included in the anterior cutaneous branches of the femoral nerve?

A
  • Intermediate cutaneous nerve
  • Medial cutaneous nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What muscle does the nerve to pectineus supply?

A

Pectineus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which nerve arises together with the intermediate cutaneous nerve?

A

Nerve to sartorius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What parts of the leg does the muscular branches of the femoral nerve supply?

A

Four parts of the quadriceps compartment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the largest cutaneous branch of the femoral nerve?

A

Saphenous nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Where does the saphenous nerve lie in relation to the femoral artery?

A

In front of the femoral artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What canal does the saphenous nerve follow as it travels down the leg?

A

Adductor canal (sub-sartorial canal)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

The saphenous nerve extends as far as which anatomical landmark?

A

Adductor foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the primary function of the Femoral Nerve?

A

Motor and sensory innervation to the anterior thigh and part of the leg

The Femoral Nerve is crucial for knee extension and sensory perception in specific areas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Describe the pathway of the Femoral Nerve.

A

Passes along the medial side of the knee, pierces fascia late, descends behind the medial border of the tibia, divides into two branches in the lower third of the leg

The branches include one that ends at the ankle and another that supplies the medial side of the foot.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What are the two branches of the Femoral Nerve at the lower third of the leg?

A
  • One continues along the margin of the tibia to the ankle
  • The other passes in front of the ankle to the medial side of the foot

The second branch communicates with the medial branch of the superficial peroneal nerve.

28
Q

What is the origin of the Obturator Nerve?

A

Formed from the anterior branches of L2-4

The Obturator Nerve arises from the lumbar plexus.

29
Q

What muscles does the Obturator Nerve innervate?

A
  • External obturator
  • Adductor longus
  • Adductor brevis
  • Adductor magnus
  • Gracilis

These muscles are primarily responsible for adduction of the thigh.

30
Q

What is the sensory function of the Obturator Nerve?

A

Sensory innervation of the skin of the medial aspect of the thigh

This provides sensation in the inner thigh region.

31
Q

Fill in the blank: The Femoral Nerve becomes subcutaneous at the point where it pierces the _______.

A

fascia late

This is a critical point in the nerve’s pathway.

32
Q

True or False: The Obturator Nerve passes through the obturator canal to enter the thigh.

A

True

This is an essential step in the nerve’s journey to innervate the thigh.

33
Q

What does the sciatic nerve supply?

A

Almost all of the skin of the leg, the muscles of the back of the thigh, and those of the leg and foot.

The sciatic nerve plays a crucial role in lower limb functionality.

34
Q

From which spinal nerves is the sciatic nerve derived?

A

L4-5 and S1-S3.

These spinal nerves are part of the lumbosacral plexus.

35
Q

What types of fibers does the sciatic nerve contain?

A

Fibers from both the anterior and posterior divisions of the lumbosacral plexus.

This composition allows the nerve to serve various muscle and skin functions.

36
Q

Where do the articular branches of the sciatic nerve arise from?

A

The upper part of the nerve.

These branches supply the hip joint.

37
Q

Which muscles are innervated by the muscular branches of the sciatic nerve?

A
  • Biceps femoris
  • Semitendinosus
  • Semimembranosus
  • Adductor magnus

These muscles are primarily located in the posterior compartment of the thigh.

38
Q

From which part of the sciatic nerve does the nerve to the short head of the biceps femoris come?

A

The common peroneal part.

This is in contrast to the other muscles supplied by the tibial part.

39
Q

What does the muscular branch of the sciatic nerve eventually give off?

A

The tibial nerve and common peroneal nerve.

These nerves innervate the muscles of the leg.

40
Q

Which nerve innervates all muscles of the foot except the extensor digitorum brevis?

A

The tibial nerve.

The extensor digitorum brevis is innervated by the peroneal nerve.

41
Q

What is the tibial nerve?

A

The medial branch of the sciatic nerve

The tibial nerve is responsible for innervating various muscles in the leg and foot.

42
Q

Where does the tibial nerve pass through?

A

The popliteal fossa

The nerve passes below the arch of the soleus muscle.

43
Q

Which muscles does the tibial nerve give branches to in the popliteal fossa?

A
  • Gastrocnemius
  • Popliteus
  • Soleus
  • Plantaris

These muscles are involved in movements of the lower leg and foot.

44
Q

What type of branches does the tibial nerve provide to the knee joint?

A

Articular branches

These branches are important for the sensory innervation of the knee joint.

45
Q

What is the sural nerve?

A

A cutaneous branch of the tibial nerve that runs down the lateral side of the leg

The sural nerve is formed by contributions from the common fibular nerve.

46
Q

Where does the sural nerve supply sensation?

A

The lateral side of the foot

It is important for sensory functions in that area.

47
Q

Which muscles are supplied by the tibial nerve in the deep flexor compartment?

A
  • Tibialis posterior
  • Flexor digitorum longus
  • Flexor hallucis longus

These muscles are crucial for foot flexion and movement.

48
Q

What anatomical landmark does the tibial nerve pass behind as it enters the foot?

A

The medial malleolus

This is a prominent bony structure on the inner side of the ankle.

49
Q

What structure does the tibial nerve pass under when entering the foot?

A

The flexor retinaculum

This structure helps to hold tendons in place during foot movement.

50
Q

Into what two branches does the tibial nerve divide as it enters the plantar aspect of the foot?

A
  • Medial plantar nerve
  • Lateral plantar nerve

These branches provide innervation to different parts of the foot.

51
Q

What is the Medial Plantar Nerve also known as?

A

Internal Plantar Nerve

It is the larger of the two terminal divisions of the tibial nerve.

52
Q

Where does the Medial Plantar Nerve pass under?

A

Abductor hallucis

It appears between the Abductor hallucis and the Flexor digitorum brevis.

53
Q

What does the Medial Plantar Nerve give off?

A

A digital plantar nerve

It finally divides opposite the bases of the metatarsals into three common digital plantar nerves.

54
Q

What types of branches does the Medial Plantar Nerve have?

A
  • Cutaneous
  • Muscular
  • Articular

Each branch serves different functions in the foot.

55
Q

What do the cutaneous branches of the Medial Plantar Nerve supply?

A

The skin on the plantar aspect of the foot

They pierce the plantar aponeurosis between Abductor hallucis and Flexor digitorum brevis.

56
Q

Which muscles are supplied by the muscular branches of the Medial Plantar Nerve?

A
  • Abductor hallucis
  • Flexor digitorum brevis
  • Flexor hallucis brevis
  • First Lumbricalis

These muscles are important for foot movement and stability.

57
Q

What do the articular branches of the Medial Plantar Nerve supply?

A

The tarsal and tarsometatarsal joints

These joints are crucial for foot mobility.

58
Q

What is the Lateral Plantar Nerve also known as?

A

External Plantar Nerve

59
Q

What is the origin of the Lateral Plantar Nerve?

A

It is a branch of the tibial nerve

60
Q

Which areas of the foot does the Lateral Plantar Nerve supply?

A

Skin of the fifth digit and lateral half of the fourth digit

61
Q

What muscles are primarily supplied by the Lateral Plantar Nerve?

A

Most of the deep muscles

62
Q

Describe the pathway of the Lateral Plantar Nerve.

A

Runs obliquely forward with the lateral plantar artery to the lateral side of the foot

63
Q

Where does the Lateral Plantar Nerve lie before dividing?

A

Between Flexor digitorum brevis and Quadratus plant

64
Q

What happens to the Lateral Plantar Nerve after it divides?

A

It divides into a superficial and a deep branch

65
Q

Which muscles does the Lateral Plantar Nerve supply before its division?

A

Quadratus plant and abductor digiti minimi

66
Q

What are the common digital nerves supplied by the Lateral Plantar Nerve?

A

Fourth and fifth common digital nerves

67
Q

What additional branches do the fourth and fifth common digital nerves give off?

A

Cutaneous and articular branches

Nerves Supply (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions