Brachial Plexus

Question 0

What are the supraclavicular branches of the brachial plexus?

Answer 0

Dorsal scapular, long thoracic, suprascapular, and subclavian nerve

Question 1

What is the innervation of the brachial plexus?

Answer 1

C5-T1

Question 2

What are the infraclavicular branches of the brachial plexus?

Answer 2

Lateral pectoral, musculocutaneous, median, medial pectoral, medial cutaneous nerve of the arm, median cutaneous nerve of the forearm, ulnar, upper subscapular, lower subscapular, thoracodorsal, axillary, and radial

Question 3

What are the three trunks of the brachial plexus?

Answer 3

Superior trunk - C5 and C6 roots
Middle trunk - Continuation of C7 root
Inferior trunk - C8 and T1 roots

Question 4

What are the two divisions of each trunk?

Answer 4

Anterior division - supplies the anterior (flexor) compartments of the upper limb
Posterior division - supplies the posterior (extensor) compartments of the upper limb

Question 5

What are the three cords of the trunk divisions?

Answer 5

Lateral cord - anterior divisions of the superior and middle trunk
Medial cord - anterior divisions of the inferior trunk
Posterior cord - posterior divisions of the supper, middle, and inferior trunk

Question 6

What are the preterminal and terminal branches of the brachial plexus?

Answer 6

Musculocutaneous nerve, radial nerve, ulnar nerve, median nerve, and axillary nerve