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AAN2 > Class 8 Peripheral Nerves > Flashcards

Class 8 Peripheral Nerves Flashcards

1
Q

What does the cervical plexus innervate? Where does it come from?

A
  • Muscle joints and skin of anterior neck.

- C1-4

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2
Q

What are the indications for cervical plexus block?

A
  • Carotid Endarterectomy

- Superficial neck

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3
Q

In the brachial plexus, how many roots are there? Trunks? Divisions? Cords? and Branches?

A
  • Roots = 5
  • Trunks = 3
  • Divisions = 6
  • Cords = 3
  • Branches = 4
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4
Q

In the brachial plexus, where are the Roots, Trunks and Divisions found?

A

-Supraclavicular in the posterior triangle of the neck.

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5
Q

In the brachial plexus, where are the Cords and Branches found?

A

-Infraclavicular in the axilla

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6
Q

The roots of the brachial plexus involve what 5 nerves?

A

-C5-8 and T1

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7
Q

The roots of the brachial plexus reorganize into what 3 trunks?

A
  • Superior = C5 & C6
  • Middle = C7
  • Inferior = C8 and T1
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8
Q

The brachial plexus trunks are enveloped in what? and located where?

A
  • Fascial sheath

- Interscalene space between the anterior and middle scalene muscles

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9
Q

An interscalene block of the brachial plexus should be injected where?

A

Fascial sheath at trunk level

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10
Q

At the division level of the brachial plexus, the divisions are are separated how?

A
  • 3 Ventral (anterior)

- 3 Dorsal (posterior)

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11
Q

What do the Ventral and Dorsal divisions of brachial plexus innervate?

A
  • Ventral = Flexor portions

- Dorsal = Extensor portions

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12
Q

Divisions of the brachial plexus are located where?

A

Posterior to the clavicle

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13
Q

The cords of the brachial plexus are found where? and named how?

A
  • Axilla

- to their position of the axillary artery

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14
Q

The 3 dorsal divisions of the brachial plexus form which cord?

A

-Posterior Cod

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15
Q

The 3 ventral divisions of the brachial plexus form what cords?

A

-Lateral and Medial

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16
Q

Where are the branches of the brachial plexus formed?

A

-Lateral border of the pectoralis minor.

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17
Q

Each cord divides into 2 _______ and each becomes _______ ________.

A
  • Branches

- Peripheral nerves

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18
Q

The lateral cord becomes what nerves?

A
  • Musculcutaneous nerve

- Lateral Median nerve

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19
Q

The medial cord becomes what nerves?

A
  • Medial median nerve

- Ulnar Nerve

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20
Q

The posterior cord become what nerves?

A
  • Axillary

- Radial

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21
Q

What does the axillary nerve innervate?

A

-Deltoid and skin covering it

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22
Q

The top of the radial nerve passes from the axilla to the arm and innervates what?

A

-Tricep

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23
Q

What part of the radial nerve innervates the skin covering the tricep?

A

-Posterior brachial

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24
Q

The radial nerve portion that descend the shaft of the humerous branches off into what two branches of the radial nerve, and what do they innervate?

A
  • Inferior lateral (Posterior arm)

- Posterior antebrachial (posterior surface of forearm)

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25
Q

The lower radial nerve has two portions, what are they and what do they innervate?

A
  • Superficial (Dosum (back) of hand to thumb,index middle and ring fingers)
  • Deep (Muscle of wrist and hand)
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26
Q

What 3 things happen with radial nerve stimulation?

A
  • Wrist extension
  • Thumb abduction
  • Metacarpo-phalangeal extension.
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27
Q

What nerve stimulation results in bicep flexion?

A

-Musculocutaneous nerve

28
Q

What does the musculocutaneous runs through and innervate?

A
  • Coracobrachialis
  • Brachialis
  • Bicep
  • Elbow
29
Q

At the elbow the musculocutaneous nerve becomes what?

A

-Lateral antebrachial

30
Q

Which 2 nerves descends the arm with the brachial artery?

A

-Median and Ulnar

31
Q

What will the median never do to the forearm? Wrist? Fingers? Thumb?

A
  • FA = Pronate
  • Wrist = Flex
  • Fingers = Flex
  • Thumb = Abduct and opposition
32
Q

Median nerve stimulation results in what 3 movements?

A
  • Wrist flex
  • Finger flex
  • Thumb opposition
33
Q

What nerve innervates the skin covering the medial (arm pit) surface of the arm?

A

-Medial brachial cutaneous

34
Q

What nerve innervates the skin covering the medial aspect of the forearm? Where does it cross?

A
  • Medial antebrachial cutaneous

- Cubital fossa

35
Q

The ulnar nerve (Karate chop) innervates what?

A
  • Muscles in wrist, fingers and thumbs

- Skin of the dorsal and medial hand and dorsam surface of ring and little finger

36
Q

Lumbosacral plexus is formed by what? What does it innervate?

A
  • L1-S5
  • Lower Abdomen
  • Lower extremities
37
Q

The Iliohypogastric Nerve innervates what?

A
  • Parietal peritoneum

- Skin of inferior abd and buttocks

38
Q

The Ilioinguinal Nerve innervates what?

A
  • Parietal peritoneum

- Skin of the thigh and external genitalia

39
Q

What 2 nerves terminate at the anterior scrotum or labia major?

A
  • Ilioinguinal Nerve

- Genitofemoral Nerve

40
Q

The Genitofemoral Nerve innervates what?

A
  • femoral hiatus
  • scrotum
  • labia majora
41
Q

What does the pudenal nerve innervate?

A

-Muscle and skin of perineum

42
Q

The lateral femoral cutaneous nerve innervates what?

A

-Skin of lateral thigh

43
Q

The posterior femoral cutaneous nerve innervates what?

A

-Posterior thigh (hip to mid calf)

44
Q

The obturator nerve innervates what?

A
  • thigh muscles
  • Hip movement
  • Skin of medial thigh
45
Q

At the femoral crease name the position of the nerve and vessels medial to lateral.

A

-VAN

Vein-Artery-Nerve

46
Q

At the femoral crease name the position of the nerve and vessels lateral to medial.

A

NAVEL

Nerve-artery-Vein- empty space- Ligament

47
Q

What does the femoral nerve innervate?

A
  • Rectus femoris
  • Vastus (lateralis, intermedius and medialis)
  • Skin of anterior thigh
48
Q

Saphenous Nerve is a branch of what nerve? What does it innervate?

A
  • Femoral

- Medial leg knee to arch

49
Q

Stimulation of the saphenous nerve causes what?

A
  • Satorious nerve contraction

- Patellar twitch (rectus femoris)

50
Q

What nerve runs through the carpel tunnel?

A

-Median

51
Q

What 2 nerves affect tourniquet pain?

A
  • Intercostal brachial

- Medial Cutaneous

52
Q

The radial nerve moves fingers ______, while median nerve pulls fingers ______.

A
  • Back

- Forward (like fist)

53
Q

The sciatic nerve is made up of what 2 nerves in the same sheath?

A
  • Tibial (anterior, largest)

- Common Peroneal (posterior)

54
Q

The sciatic nerve innervates what?

A
  • Hip (extension)

- Knee (flex)

55
Q

Where does the sciatic nerve split into the tibial and common peroneal?

A

-Popliteal fossa

56
Q

What is blocked with a politeal block?

A
  • Tibial

- Common perineal

57
Q

Tibial nerve branches off in the foot into what 2 nerves?

A
  • Medial plantar

- Lateral plantar

58
Q

What does the deep peroneal innervate?

A

-Space between big and next toe

59
Q

What nerve innervates the majority of the top of the foot?

A

-Superficial peroneal

60
Q

What nerve is formed from a union of the tibial and common peroneal?

A

Sural

61
Q

What innervates the pinky toe and that side of the foot and mid-calf?

A

-Sural nerve

62
Q

Saphenous nerve innervates what?

A

Medial calf

63
Q

Stimulation of tibial nerve does what to the foot?

A
  • Plantar flex (toes curl)

- Inversion (Move in toward big toe)

64
Q

Stimulation of superficial peroneal nerve does what to the foot?

A

-Move out toward pinky toe

65
Q

Stimulation of deep peroneal nerve does what?

A

-Toes toward shin

AAN2 (11 decks)

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