Brachial Plexus

Question 1

Brachial subdivisions - “Radiology Techs Drink Cold Bevarages”

Answer 1

Roots
Trunks
Divisions
Cords
Branches

Question 2

Branchial subdivisions - Classical numers

Answer 2

5-3-2-3-5

Question 3

Branchial plexus - Rami that contribute

Answer 3

Classically C5-T1 ventral rami

Question 4

What rami may contribute?

Answer 4

C4 and T2

Question 5

What are the anatomical landmarks?

Answer 5

Neural foramen
Interscalene triangle
Lateral border of the first rib
Medial border of the coracoid process
Lateral border of the pectoralis minor muscle

Question 6

Ventral roots - What fibers they carry?

Answer 6

Motor

Question 7

Dorsal roots - What fibers they carry?

Answer 7

Sensitive

Question 8

Where do the roots merge to form the spinal nerve?

Answer 8

Neural foramen (first landmark)

Question 9

Anatomical landmark to identify the five nerve roots of the brachial plexus…

Answer 9

Proximal first rib

Question 10

What’s the second anatomical landmark to identify the trunks?

Answer 10

Interscalene triangle

Question 11

What muscles form the interscalene triangle?

Answer 11

Anterior and middle scalene

Question 12

What roots make up the upper trunk?

Answer 12

C5 e C6

Question 13

What roots make up the lower trunk?

Answer 13

C8 e T1

Question 14

What root continues as the middle trunk?

Answer 14

C7

Question 15

What trunks are superior to the subclavian artery?

Answer 15

Upper and middle

Question 16

What trunk is posterior to the subclavian artery?

Answer 16

Lower

Question 17

What’s the third anatomical landmark to identify the divisions?

Answer 17

Lateral border of the first rib

Question 18

What happens to the divisions as they pass the lateral first rib border?

Answer 18

They divide into anterior and posterior divisions

Question 19

What muscles the anterior division innervate?

Answer 19

Flexor muscles of the upper limb

Question 20

What muscles the posterior division innervate?

Answer 20

Extensor muscles of the upper limb

Question 21

What’s the fourth anatomical landmark to identify the cords?

Answer 21

Medial border of the coracoid process

Question 22

How many cords do the divisions form?

Answer 22

Three: lateral, posterior and medial

Question 23

What’s the anatomical reference for the cords positions?

Answer 23

Axillary artery

Question 24

What’s the fifth anatomical landmark to identify the branches?

Answer 24

Lateral border of the pectoralis minor muscle

Question 25

Posterior cord branch - Nerve

Answer 25

Axillary

Radial

Question 26

Lateral and medial branches - Nerves

Answer 26

Median
Ulnar
Musculocutaneous