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Block 1: Upper Limb > Axilla - Brachial Plexus > Flashcards

Axilla - Brachial Plexus Flashcards

1
Q

Dorsal scapular nerve roots?

A

C5

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2
Q

Long thoracic nerve roots?

A

C5 - C7

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3
Q

Suprascapular nerve roots?

A

C5, C6

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4
Q

Subclavian nerve roots?

A

C5, C6

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5
Q

Lateral pectoral nerve roots?

A

C5-C7

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6
Q

Medial Pectoral nerve roots?

A

C8, T1

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7
Q

Medial brachial cutaneous nerve roots?

A

T1

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8
Q

Medial Antebrachial cutaneous nerve roots?

A

C8, T1

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9
Q

Upper subscapular nerve roots?

A

C5, C6

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10
Q

Thoracodorsal (middle subscapular) nerve roots?

A

C6-C8

***C6 is an inconsistent contributor

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11
Q

Lower subscapular nerve root?

A

C5, C6

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12
Q

Musculocutaneous nerve roots?

A

C5-C7

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13
Q

Axillary nerve roots?

A

C5, C6

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14
Q

Radial nerve roots?

A

C5-C8, T1

***all brachial plexus nerve roots, BUT T1 IS INCONSISTENT CONTRIBUTOR

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15
Q

Ulnar nerve roots?

A

C8, T1

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16
Q

Median nerve roots?

A

C5-C8, T1

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17
Q

Cords of the brachial plexus are named in reference to the…

A

axillary artery

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18
Q

Roots pass between the…

A

anterior and middle scalene muscles

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19
Q

Divisions occur as the plexus passes behind the…

A

clavicle

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20
Q

the “M” in the brachial plexus is made up of what terminal nerves?

A

Musculocutaneous, median, ulnar

(all anterior branches)

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21
Q

Suprascapular nerve is going to run through what part of the scapula?

A

Suprascapular notch (superior notch)

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22
Q

Musculocutaneous nerve pierces what muscle and then travels where?

A

pierces the coracobrachialis muscle

travels inferior between the biceps brachii and brachialis

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23
Q

The musculocutaneous nerve continues as the…

A

Lateral antebrachial cutaneous nerve

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24
Q

Musculocutaneous nerve innervates…

A

anterior compartment of arm (biceps brachii, brachialis, coracobrachialis)

skin of the lateral aspect of the forearm (bc it continues as the LABC n)

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25
The axillary nerve travels posteriorly with what artery in what space?
Posterior circumflex humeral artery Quadrangular space
26
The axillary nerve continues as the...
Lateral brachial cutaneous nerve
27
Axillary nerve innervates...
deltoid, teres minor, GH joint skin over superolateral arm (deltoid area)
28
The radial nerve enters the radial groove on the posterior humerus along with the...
deep (profunda) brachial artery
29
What nerve branches off of the radial nerve around mid-shaft of posterior humerus?
Posterior antebrachial cutaneous nerve
30
Radial nerve branches into the...
superficial and deep branches of the radial nerve
31
The deep branch of the radial nerve becomes the __________ once it passes the __________ in the forearm
Posterior (dorsal) Interosseous nerve inferior border of the supinator muscle
32
Radial nerve innervates...
posterior compartments of the arm and forearm skin of posterior and inferolateral arm skin of dorsum of hand (lateral to the axial line of digit 4)
33
Median nerve travels with what artery?
Brachial artery
34
Median nerve lies _______ to the brachial artery in the ________ fossa
Medial Cubital fossa
35
What nerve branches off the median nerve?
anterior interosseous nerve
36
Median nerve innervates...
all flexor mm in forearm (EXCEPT the FCU and medial 2 tendons of FDP) lateral 2 tendons of FDP 5 intrinsic muscles in thenar portion of the hand lateral palmar skin (lateral to the axial line of digit 4)
37
Ulnar nerve runs down medial aspect of arm posterior to the _________ of the humerus
medial epicondyle
38
Ulnar nerve innervates...
FCU Medial 2 tendons (ulnar half) of flexor digitorum profundus most intrinsic mm of the hand medial palmar skin (medial to the axial line of digit 4) Dorsal medial to digit 3
39
Lateral pectoral nerve passes _______ to the axillary artery
anterior
40
Lateral pectoral nerve communicates with the _______ via a communicating branch
Medial pectoral nerve
41
Lateral pectoral nerve innervates...
pec major muscle (clavicular head)
42
Medial pectoral nerve travels between the _______ and _______
axillary artery axillary vein
43
Medial pectoral nerve innervates...
pec minor (sternocostal head)
44
Medial pectoral nerve pierces what muscle?
pec minor
45
Medial brachial cutaneous nerve travels with the _______ on the medial side of the arm
axillary vein
46
Medial brachial cutaneous nerve supplies...
skin of medial arm
47
Medial antebrachial cutaneous nerve supplies...
skin of medial forearm
48
Medial antebrachial cutaneous nerve initially runs with the ______ and is often confused with it
ulnar nerve
49
Medial antebrachial cutaneous nerve travels between the...
axillary artery and vein
50
Upper subscapular nerve innervates...
superior portion of the subscapularis
51
Lower subscapular nerve innervates:
inferior portion of subscapularis teres major
52
Lower subscapular nerve travels deep to what artery?
subscapular artery
53
Thoracodorsal (middle subscapular) nerve runs inferolaterally along posterior axillary wall with the...
thoracodorsal artery
54
Thoracodorsal nerve innervates...
latissimus dorsi
55
C5, C6
Suprascapular Subclavian Upper subscapular Lower subscapular Axillary
56
C5, C6, C7
Long thoracic Lateral pectoral Musculocutaneous
57
C8, T1
Medial pectoral Medial antebrachial cutaneous Ulnar
58
C5-C8, T1
Radial Median
59
Union of C5 & C6 roots
superior trunk
60
Continuation of C7 root
Middle trunk
61
Union of C8 & T1 roots
Inferior trunk
62
Anterior divisions supply the
anterior compartment of the arm & forearm
63
Posterior divisions supply the
posterior compartment of the arm & forearm
64
Anterior & posterior divisions are named in reference to the...
axillary artery
65
**Anterior divisions of the superior & middle trunks** form the
lateral cord
66
**Anterior divisions of the inferior trunk** continues as the
Medial cord
67
**Posterior divisons of all 3 trunks unite** to form the
posterior cord
68
**Lateral pectoral n.** arises from
lateral cord
69
**Medial pectoral n.** arises from
medial cord
70
Terminal branch of the lateral cord
musculocutaneous n.
71
Terminates from a combination of the lateral and medial cords
median n.
72
Terminal branch from the medial cord
ulnar n.
73
Smaller terminal branch of the posterior cord
axillary n.
74
Largest terminal branch of the posterior cord
radial n.
75
Branch of the lateral cord
lateral pectoral n.
76
Branch of the medial cord
medial pectoral n.
77
2 branches of the medial cord
1. medial brachial n. 2. medial antebrachial cutaneous n.

Block 1: Upper Limb (34 decks)

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