Brachial Plexus

Question 1

Mnemonic for the areas of the brachial plexus

Answer 1

Randy --> roots
Travis --> trunks
Drinks --> divisions
Cold --> cords
Beers --> branches

Question 2

Nerve levels of the brachial plexus?

Answer 2

C5
C6
C7
C8
T1

Question 3

Nerves that come off the roots?

Answer 3

C5 –> Dorsal scapular

C5-T1 –> Long Thoracic

Question 4

Nerves that come off the trunks?

Answer 4

Upper trunk –> suprascapular and n. to subclavius

Question 5

How do you name the 3 trunks?

Answer 5

Upper
Middle
Lower

Question 6

Nerves that come off the divisions?

Answer 6

None

Question 7

How do you name the cords?

Answer 7

Lateral
Posterior
Medial

Question 8

Nerve that comes off the lateral cord?

Answer 8

Lateral Pectoral

Question 9

Nerves that come off the posterior cord?

Answer 9

Upper and Lower Subscapular nn.

Question 10

Nerves that come off the medial cord?

Answer 10

Medial Pectoral
Medial antebrachial cutaneous
Medial brachial cutaneous

Question 11

What are the branches?

Answer 11

Musculocutaneous
Axillary
Median
Radial
Ulnar

Question 12

Musculocutaneous nerve?

Answer 12

C5-C7

Question 13

Axillary nerve?

Answer 13

C5-C6

Question 14

Median nerve?

Answer 14

C6-T1

Question 15

Radial nerve?

Answer 15

C5-C8

Question 16

Ulnar nerve?

Answer 16

C8-T1

Question 17

Medial palm plus medial 1 and half fingers are innervated by?

Answer 17

Ulnar nerve

Question 18

Lateral palm plus the lateral 3 and a half fingers are innervated by?

Answer 18

Median nerve

Question 19

How is the cutaneous areas of the backside of the hand innervated?

Answer 19

Medial 1 and half fingers - ulnar
Lateral 3 and half fingers - radial
Finger tips of lateral 3 and half digits - median