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Flashcards in Brachial Plexus Deck (12):
1

From what nerve roots does the Brachial Plexus arise?

C5 - T1

2

What is the order of structure for the Brachial Plexus?

Roots
Trunks
Divisions
Cords
Nerves

3

What are the 3 trunks of the Brachial Plexus?

Superior
Middle
Inferior

4

Which nerve roots form each trunk?

Superior = C5 and C6
Middle = C7
Inferior = C8 and T1

5

What are the divisions of the Brachial Plexus?

Anterior (Lateral and Medial)
Posterior

6

From what trunks do the divisions arise?

Lateral Anterior = Superior and Middle
Posterior = Superior, Middle and Inferior
Medial Anterior = Inferior

7

What are the cords of the Brachial Plexus?

Lateral (from Lateral Anterior Division)
Posterior (from Posterior Division)
Medial (from Medial Anterior Division)

8

What nerves arise from the Lateral Cord?

Musculocutaneous Nerve

9

What nerves arise from the Posterior Cord?

Radial Nerve
Axillary Nerve

10

What nerves arise from the Medial Cord?

Ulnar Nerve

11

What nerve arises from the joining of the Lateral and Medial Cords?

Median Nerve

12

What are signs of Radial, Ulnar or Median Nerve Damage/Pathology?

Radial Nerve = Wrist drop due to loss of extension
Ulnar Nerve = Inability to make a star with hand due to loss of digit abduction
Median Nerve = Inability to make 'Okay' sign due to loss of digit opposition