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Brachial Plexus Flashcards

1
Q

C4, C5 Roots

A

Dorsal scapular nerve

Rhomboids and Levator Scapula

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2
Q

C5,C6,C7 Roots

A

Long Thorasic Nerve

Serratus Anterior

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3
Q

C5, C6 Upper Trunk

A

Nerve to subclavious

subclavious muscle

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4
Q

C5,C6 Upper Trunk

A

Suprascapular Nerve

Supraspinatus and Infraspinatus

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5
Q

C5,C6,C7 Lateral Cord

A

Lateral PerctporalNerve

Pectoralis Major and Minor (by communicating with Medial Pectoral Nerve)

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6
Q

also cut. n

C5, C6, C7 Lateral Cord

A

Musculocutaneous Nerve

Coracobrachialis, Brachialis and Biceps Brachii

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7
Q

C6, C7 lateral cord

A

Lateral root of the Median Nerve

Fibers to the Median N

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8
Q

What lateral cord becomes the Lateral Cutaneous Branch of the forearm?

A

C5, C6,C7 Musculocutaneous Nerve

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9
Q

C5, C6 posterior Cord (upper)

A

Upper Subscapular Nerve

Subscapularis (upper part)

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10
Q

C6, C7, C8 posterior cord

A

Thoracodorsal Nerve
(Middle subscapular N.)

Latissimis Dorsi

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11
Q

lower

C5, C6 posterior cord

A

Lower Subscapular nerve

Subscapularis (lower part), Teres Major

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12
Q

anterior and posterior branch

C5, C6 posterior cord

muscular innervation

A

Axillary Nerve

anterior branch: deltoids (and small area overlying the skin)

Posterior Branch: Teres Minor and Deltoid

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13
Q

anterior and posterior branches

C5, C6 posrterior cord

cutaneous innervation

A

Axillary Nerve

posterior branch becomes Upper lateral cutaneous nerve of the arm

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14
Q

C5, C6, C7, C8 T1 posterior cord

muscular inn

A

Radial Nerve

  • Supinator,
  • Anconeus,
  • the extensor muscles of

* Triceps brachii,

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15
Q

C5, C6, C7, C8, T1 posterior Cord

Cutaneous innervation

A

Radial Nerve

Posterior Cutaneous Nerve of the Arm: skin of the posterior arm

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16
Q

The Posterior Cutaneous Nerve of the Arm is from?

Roots/ Cord/ Nerve

A

C5, C6, C7,C8,T1, Radial Nerve, possterior cord

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17
Q

what does the posterior branch of the Axillary Nerve become?

A

Upper Lateral Cutaneous Nerve of the Arm

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18
Q

What does the posterior branch of the Axillary Nerve become?

A

Upper lateral cutaneous nerve of the arm

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19
Q

list the nerves of C8, T1 medial cord

(5)

A
  • Median Nerve
  • ulnar Nerve
  • Medial Cutaneous Nerve of the Arm
  • Medial Cutaneous Nerve of the forearm
  • Medial Pectoral Nerve
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20
Q

Medial Pectoral Nerve

A

Pectoralis Major and Minor

Medial Cord C8, T1

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21
Q

Medial root of Median Nerve

mixed

A
  • Muscular fibers to the Medial Nerve.
  • Cutaneous innervation to portions of the hand not served by Radial or Ulnar
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22
Q

Medial Cutaneous Nerve of the Arm

A

Front and medial skin of the arm

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23
Q

Medial cutaneous nerve of the forearm

A

Medial skin of the forearm

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24
Q

Ulnar Nerve

muscular innervation

A
  • Flexor carpi ulnaris,
  • the medial two bellies of Flexor digitorum profundus,
  • the intrinsic hand muscles except the Thenar muscles and the two most lateral lumbricals
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25
Ulnar Nerve | cutaneous innervation
* the skin of the medial side of the hand * medial one and a half fingers on the palmar side * medial two and a half fingers on the dorsal side
26
Brachial Plexus origin
ventral rami C5-C8, T1
27
motor supply of brachial plexus
upper limb and pectoral girdle
28
sensory supply of brachial plexus
upper limb and part of upper thorax
29
what does the brachial plexus consist of | (mnemonic)
Ransy, Travis, Drinks, Cold, Beers | Roots, Trunks, Divisions, Cords, Branches
30
what mm are the roots formed between?
anterior and midial scalenes
31
what 3 nerve branches arise from the roots directly?
1. Dorsal scapular nerve 2. subclavian nerve 3. long thoracic nerve
32
what root does the dorsal scapular nerve arise from and what muscle does it innervate?
posterior aspect of C-5 Root, supplying Rhomboids
33
what root does the subclavian nerve arise from and what does it innervate?
anterior root of C-5, C-6 supplies subclavius
34
what root does the long thorasic nerve arise from and what does it innervate?
posterior aspects of C-5, C-6, C7 supplies: serratus anterior
35
Trunks are formed from the ____, as they pass through which mm?
Roots anterior and medial scalenes
36
How many trunks and what are their names?
Three Trunks; upper/superior trunk middle trunk lower/inferior trunk
37
how is the upper/superior trunk formed?
C-5, C-6 Roots
38
how is the middle trunk formed?
C-7 root
39
how is the lower/inferior tunk formed?
C-8, T-1 Roots
40
how many branches arise from the Trunks?
ONE- the suprascapular nerve
41
what does the suprascapular nerve innervate?
mm: supraspinatus and infraspinatus cut.: GH and acromioclavicular joints
42
How are trunks divided and where?
Anterior and posterior Divisions posterior to mid-clavical
43
what branches arise from Divisions?
none
44
Generally, what do the anterior and posterior divisions innervate?
anterior- anterior compartment (flexor mm) posterior- posterior compartment (extensor mm)
45
what do the divisions combine to form?
Cords
46
What are the cords names in relation to?
location to the second part of the axillary artery
47
What are the 3 Cords?
lateral cord medial cord posterior cord
48
how is the lateral cord formed?
from the union of thr upper two anterior divisions
49
the lateral cord's geography
lateral to the lateral border of the first rib
50
how is the medial cord formed?
a continuation of the lower anterior division
51
how is the posterior cord formed?
a union of the three posterior divisions
52
what periferal nerves branch from the lateral cord?
* lateral pectoral n. * musculocutaneous n * median n.
53
lateral pectoral n. arises from?
lateral cord: C5,C6,C7
54
the musculocutaneous nerve arises from?
lateral cord: C5, C6,C7
55
the Median N. arises from?
lateral cord: C5, c6, c7, c8 T1 medial cord: C5, C6, C7, C8, T1
56
what periferal nerves branch from the posterior cord? | (5)
* upper scapular nerve * thoracodorsal nerve * lower scapular nerve * radial nerve * axillary nerve
57
upper scapular nerve arises from?
posterior cord: C5, C6
58
thoracodorsal nerve arises from?
posterior cord: C6,C7,C8
59
the lower scapular nerve arises from?
posterior cord: C5,C6
60
Radial nerve arises from?
posterior cord: C5, C6, C7,C8, T1
61
Axillary nerve arises from?
posterior cord: C5,C6
62
what periferal nerves arise from medial cord? | (5)
* medial pectoral nerve * medial cut. nerve of the arm * medial cut. nerve of the forearm * medial root of the median nerve * ulnar nerve
63
medial pectoral nerve arises from?
Medial Cord: C8, T1
64
medial cut. nerve of the arm arises from?
Medial Cord: C8, T1
65
Medial cut. of the forearm arise from ?
medial cord: C8, T1
66
medial root of the median nerve arises from?
medial cord: C5, C6, C7, C8, T1
67
the ulnar nerve arises from what ?
the medial cord: C7, C8, T1
68

Neurofunctional Anatomy (3 decks)

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