Upper limb nerves - Brachial plexus

Question 1

What 2 roots supply the superior trunk?

Answer 1

C5 and C6

Question 2

What root supplies the middle trunk?

Answer 2

C7

Question 3

What 2 roots supply the inferior trunk?

Answer 3

C8 and T1

Question 4

Where does the anterior and posterior divisions of the superior trunk lead to?(what cords?)

Answer 4

Anterior - lateral cord
Posterior - posterior cord

Question 5

Where does the anterior and posterior divisions of the middle trunk lead to?(what cords?)

Answer 5

Anterior - lateral cord
Posterior - posterior cord

Question 6

Where does the anterior and posterior divisions of the inferior trunk lead to?(what cords?)

Answer 6

Anterior - medial cord
Posterior - posterior cord

Question 7

What branches does the lateral cord lead into?

Answer 7

Musculocutaneous and Median nerve branches

Question 8

What branches does the posterior cord lead into?

Answer 8

Axillary and Radial nerve branches

Question 9

What branches does the medial cord lead into?

Answer 9

Median and Ulnar nerve branches

Question 10

What nerve supplies Latissimus Dorsi?

Answer 10

Thoracodorsal nerve

Question 11

What nerve supplies Rhomboids?

Answer 11

Dorsal scapula nerve

Question 12

What nerve supplies Supraspinatus?

Answer 12

Suprascapular nerve

Question 13

What nerve supplies Infraspinatus?

Answer 13

Suprascapular nerve

Question 14

What nerve supplies Subscapularis?

Answer 14

Subscapular nerve

Question 15

What nerve supplies Pectoralis Major?

Answer 15

Lateral pectoral nerve (innervates clavicular section), Medial pectoral nerve (innervates sternal section and pectoralis minor)