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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
The lower radial nerve has two portions, what are they and what do they innervate?
- Superficial (Dosum (back) of hand to thumb,index middle and ring fingers) - Deep (Muscle of wrist and hand)
26
What 3 things happen with radial nerve stimulation?
- Wrist extension - Thumb abduction - Metacarpo-phalangeal extension.
27
What nerve stimulation results in bicep flexion?
-Musculocutaneous nerve
28
What does the musculocutaneous runs through and innervate?
- Coracobrachialis - Brachialis - Bicep - Elbow
29
At the elbow the musculocutaneous nerve becomes what?
-Lateral antebrachial
30
Which 2 nerves descends the arm with the brachial artery?
-Median and Ulnar
31
What will the median never do to the forearm? Wrist? Fingers? Thumb?
- FA = Pronate - Wrist = Flex - Fingers = Flex - Thumb = Abduct and opposition
32
Median nerve stimulation results in what 3 movements?
- Wrist flex - Finger flex - Thumb opposition
33
What nerve innervates the skin covering the medial (arm pit) surface of the arm?
-Medial brachial cutaneous
34
What nerve innervates the skin covering the medial aspect of the forearm? Where does it cross?
- Medial antebrachial cutaneous | - Cubital fossa
35
The ulnar nerve (Karate chop) innervates what?
- Muscles in wrist, fingers and thumbs | - Skin of the dorsal and medial hand and dorsam surface of ring and little finger
36
Lumbosacral plexus is formed by what? What does it innervate?
- L1-S5 - Lower Abdomen - Lower extremities
37
The Iliohypogastric Nerve innervates what?
- Parietal peritoneum | - Skin of inferior abd and buttocks
38
The Ilioinguinal Nerve innervates what?
- Parietal peritoneum | - Skin of the thigh and external genitalia
39
What 2 nerves terminate at the anterior scrotum or labia major?
- Ilioinguinal Nerve | - Genitofemoral Nerve
40
The Genitofemoral Nerve innervates what?
- femoral hiatus - scrotum - labia majora
41
What does the pudenal nerve innervate?
-Muscle and skin of perineum
42
The lateral femoral cutaneous nerve innervates what?
-Skin of lateral thigh
43
The posterior femoral cutaneous nerve innervates what?
-Posterior thigh (hip to mid calf)
44
The obturator nerve innervates what?
- thigh muscles - Hip movement - Skin of medial thigh
45
At the femoral crease name the position of the nerve and vessels medial to lateral.
-VAN | Vein-Artery-Nerve
46
At the femoral crease name the position of the nerve and vessels lateral to medial.
NAVEL | Nerve-artery-Vein- empty space- Ligament
47
What does the femoral nerve innervate?
- Rectus femoris - Vastus (lateralis, intermedius and medialis) - Skin of anterior thigh
48
Saphenous Nerve is a branch of what nerve? What does it innervate?
- Femoral | - Medial leg knee to arch
49
Stimulation of the saphenous nerve causes what?
- Satorious nerve contraction | - Patellar twitch (rectus femoris)
50
What nerve runs through the carpel tunnel?
-Median
51
What 2 nerves affect tourniquet pain?
- Intercostal brachial | - Medial Cutaneous
52
The radial nerve moves fingers ______, while median nerve pulls fingers ______.
- Back | - Forward (like fist)
53
The sciatic nerve is made up of what 2 nerves in the same sheath?
- Tibial (anterior, largest) | - Common Peroneal (posterior)
54
The sciatic nerve innervates what?
- Hip (extension) | - Knee (flex)
55
Where does the sciatic nerve split into the tibial and common peroneal?
-Popliteal fossa
56
What is blocked with a politeal block?
- Tibial | - Common perineal
57
Tibial nerve branches off in the foot into what 2 nerves?
- Medial plantar | - Lateral plantar
58
What does the deep peroneal innervate?
-Space between big and next toe
59
What nerve innervates the majority of the top of the foot?
-Superficial peroneal
60
What nerve is formed from a union of the tibial and common peroneal?
Sural
61
What innervates the pinky toe and that side of the foot and mid-calf?
-Sural nerve
62
Saphenous nerve innervates what?
Medial calf
63
Stimulation of tibial nerve does what to the foot?
- Plantar flex (toes curl) | - Inversion (Move in toward big toe)
64
Stimulation of superficial peroneal nerve does what to the foot?
-Move out toward pinky toe
65
Stimulation of deep peroneal nerve does what?
-Toes toward shin

AAN2 (11 decks)

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