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Trauma + Orthopaedics > Brachial Plexus > Flashcards

Brachial Plexus Flashcards

1
Q

the long thoracic nerve arises from which component of the brachial plexus?

A

Roots - C5,6,7

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2
Q

the dorsal scapular nerve arises from which component of the brachial plexus?

A

Roots (C5,6)

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3
Q

the suprascapular nerve arises from which component of the brachial plexus?

A

Superior Trunk C5,6

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4
Q

what muscles are innervated by the suprascapular nerve?

A

Supraspinatus, infraspinatus

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5
Q

how many branches are given off by the trunks of the brachial plexus?

A

2 from superior trunk:
Suprascapular nerve
nerve to subclavius

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6
Q

which muscles are innervated by the dorsal scapular nerve?

A

Rhomboids

Levator scapulae

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7
Q

how many divisions are there of the brachial plexus?

A

6 (anterior and posterior divisions from each of 3 trunks)

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8
Q

which nerves branch from the divisions of the brachial plexus?

A

no branches

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9
Q

the anterior divisions supply the flexors or extensors?

A

Flexors

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10
Q

the posterior divisions supply the flexors or extensors?

A

extensors

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11
Q

Pec major is innervated by which nerves?

A

Lateral pectoral nerve C5,6,7

Medial Pectoral Nerve C8,T1

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12
Q

Pec minor is innervated by what nerve?

A

Medial pectoral nerve C8,T1

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13
Q

the lateral pectoral nerve is a branch from what component of the brachial plexus?

A

Lateral cord

C5,6,7

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14
Q

the lower subscapular nerve (C5,6) innervates which muscles?

A

Teres Major

Subscapularis

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15
Q

how many branches are given off by the posterior cord?

A

3 branches
Upper + Lower subscapular nerves
Thoracodorsal nerve

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16
Q

Latissimus dorsi is innervated by which nerve?

A

Thoracodorsal Nerve (C6,7,8)

17
Q

Subscapularis is innervated by which nerves?

A

Upper + Lower Subscapular nerves (C5,6)

18
Q

how many branches are given off by the medial cord?

A

3 branches:
Medial Pectoral Nerve (C8,T1)
Medial cutaneous nerve of arm
Medial cutaneous nerve of forearm

19
Q

what are the terminal branches of the lateral cord?

A 
Musculocutaneous nerve (c5,6,7) 
Lateral root of Median Nerve
20
Q

what are the terminal branches of the posterior cord?

A 
Axillary Nerve (c5,6)
Radial Nerve (C5-T1)
21
Q

the axillary nerve supplies which muscles?

A

Deltoid

Teres Minor

22
Q

what are the terminal branches of the medial cord?

A 
Ulnar Nerve (C8,T1)
Medial root of Median Nerve

Trauma + Orthopaedics (6 decks)

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