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Gross 1 > Brachial Plexus > Flashcards

Brachial Plexus Flashcards

1
Q

What are the 3 TRUNKS of the brachial plexus

A

Upper
Middle
Lower

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2
Q

Upper TRUNK of the brachial plexus is formed by:

A

C5 & C6

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3
Q

Middle TRUNK of the brachial plexus is formed by:

A

C7 ALONE

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4
Q

Lower TRUNK of the brachial plexus is formed by:

A

C8 & T1

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5
Q

What are the DIVISIONS of the brachial plexus?

A

Anterior

Posterior

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6
Q

What are the CORDS of the brachial plexus

A

Lateral
Medial
Posterior

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7
Q

Form the fusion of the ANTERIOR division of the upper & middle trunks & contains fibers from:

A

C5, C6, & C7

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8
Q

From the ANTERIOR division of the lower trunk and contains fibers from:

A

C8 & T1

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9
Q

From the POSTERIOR division of ALL 3 trunks & contains fibers from

A

C5, C6, C7, C8 and T1

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10
Q

Nerves directly from the Spinal Nerves:

A
  • Dorsal Scapular

- Long Thoracic

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11
Q

Nerves from the UPPER trunk:

A
  • Suprascapular

- Nerve to the subclavius

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12
Q

Nerves from the Lateral cord:

A
  • Lateral pectoral
  • Musculocutaneous
  • Part of the median
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13
Q

Nerves from the MEDIAL cord

A
  • Medial pectoral
  • Medial brachial cutaneous
  • Medial antebrachial cutaneous
  • Ulnar
  • Part of the Median
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14
Q

Nerves from the POSTERIOR cord:

A
  • Upper & lower subscapular
  • Thoracodorsal
  • Axillary
  • Radial
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15
Q

Dorsal Scapular Nerve:
Segmental innervation
Motor Supply
Articular supply

A

Segmental Innervation: C5
Motor supply: Rhomboid major/minor, Levator Scapula
Articular Supply: Acromicoclavicular Joint

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16
Q

Long Thoracic Nerve:
Segmental supply
Motor supply

A

Segmental Innervation: C5, C6 & C7

Motor Supply: Serratus Anterior

17
Q

Suprascapular Nerve:
Segmental supply
Motor supply
Articular supply

A

Segmental Supply: C5 & C6
Motor Supply: Supraspinatus & infraspinatus
Articular Supply: Shoulder joint

18
Q

Nerve to the Subclavius:
Segmental supply
Motor supply
Articular supply

A

Segmental Innervation: C5 & C6
Motor Supply: Subclavius
Articular Supply: Sternoclavicular joint

19
Q

Lateral pectoral Nerve
Segmental innervation
Motor supply

A

Segmental Innervation: C5, C6 & C7

Motor Supply: Pectoralis Major

20
Q 
Musculocutaneous Nerve:
Segmental inn. 
Motor supply
Articular supply 
Cutaneous supply
A

Segmental innervation: C5, C6 & C7
Motor Supply: Coracobrachialis, Biceps Brachii, & Brachialis
Articular Supply: Elbow Joint
Cutaneous Supply: Lateral Aspect go the forearm

21
Q

Medial Pectoral Nerve:
Segmental innervation
Motor supply

A

Segmental Innervation: C8 & T1

Motor Supply: Pectoral Major & minor

22
Q

Medial Brachial Cutaneous Nerve:
Segmental innervation
Cutaneous supply

A

Segmental Innervation: T1 ONLY

Cutaneous Supply: Medial aspect of the arm

23
Q

Medial Antebrachial Cutaneous Nerve:
Segmental innervation
Cutaneous supply

A

Segmental Innervation: C8 & T1

Cutaneous Supply: Medial aspect of the forearm

24
Q 
Ulnar Nerve:
Segmental innervation
Motor supply
Articular supply 
Cutaneous supply
A

Segmental Innervation: C8 & T1
Motor supply: Flexor Carpi Ulnaris, 1/2 of Flexor digitorum profundus, Hypothenar muscles
Articular Supply: Elbow & wrist joint
Cutaneous supply: Medial aspect of the palm, Dorsum of the hand, Skin of digits 5, and part of digit 4

25
Q 
Median Nerve:
Segmental innervation 
Motor supply 
Articular supply 
Cutaneous supply
A

Segmental Innervation: C6, C7, C8 & T1
Motor supply: Most of the muscles of the anterior forearm
Articular Supply: Elbow & wrist joint
Cutaneous Supply: Lateral 3/4 of the palmar surface of the hand & skin of the 1st 3 1/2 digits

26
Q

Upper subscapular Nerve:
Segmental supply
Motor supply

A

Segmental Innervation: C5

Motor Supply: Subscapularis

27
Q

Lower Subscapular Nerve:
Segmental innervation
Motor supply

A

Segmental Innervation: C6

Motor Supply: Subscapularis & Teres Major

28
Q

Thoracodorsal Nerve:
Segmental innervation
Motor supply

A

Segmental Innervation: C6, C7 & C8

Motor Supply: Latissimus Dorsi

29
Q 
Axillary Nerve: 
Segmental innervation 
Motor supply 
Articular supply 
Cutaneous supply
A

Segmental Innervation: C5 & C6
Motor Supply: Deltoid & Teres Minor
Articular Supply: Shoulder joint
Cutaneous Supply: Lateral aspect of the ARM

30
Q 
Radial Nerve:
Segmental innervation 
Motor supply 
Articular supply 
Cutaneous supply
A

Segmental Innervation: C5, C6, C7, C8 & T1
Motor Supply: Triceps brachii, Anconeus, all of the posterior forearm muscles
Articular Supply: Elbow & wrist joint
Cutaneous Supply: Most of the posterior arm & forearm; dorsum of the hand ( not supplied by the median & ulnar nerves

31
Q

Plexus in which C4 is the most superior spinal nerve root forming the plexus. In this type of plexus, C8 would be the most inferior spinal nerve root

A

Prefixed Brachial Plexus

32
Q

Plexus in which C6 is the most superior spinal nerve root forming the plexus. In this type of plexus, T2 would be the most inferior spinal nerve root

A

Postfixed Brachial Plexus

Gross 1 (29 decks)

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