Brachial Plexus

Question 1

Brachial Plexus

Answer 1

anterior rami of C5-T1

major network of nerves supplying upper extremity

Question 2

Brachial Plexus - Roots (5)

Answer 2

C5
C6
C7
C8
T1

Question 3

Brachial Plexus - Trunks (3)

Answer 3

superior (C5/C6)
middle (C7)
inferior (C8/T1)

Question 4

Brachial Plexus - Divisions (6)

Answer 4

anterior/posterior divisions (superior trunk)
anterior/posterior divisions (middle trunk)
anterior/posterior divisions (inferior trunk)

Question 5

Brachial Plexus - Cords (3)

Answer 5

lateral cord (anterior divisions of superior and middle trunks)
medial cord (anterior division of inferior trunk)
posterior cord (posterior divisions of superior, middle, and inferior trunks)

Question 6

Brachial Plexus - Branches (7)

Answer 6

*musculocutaneous nerve (lateral cord)
*median nerve (lateral and medial cords)
*ulnar nerve (medial cord)
*radial nerve (posterior cord)
*axillary nerve (posterior cord)
thoracodorsal nerve (posterior cord)
subscapular nerve (posterior cord)

(*main branches)

Question 7

Lateral Pectoral Nerve

Answer 7

lateral cord

Question 8

Medial Pectoral Nerve

Answer 8

medial cord

Question 9

Suprascapular Nerve

Answer 9

superior trunk

Question 10

Dorsal Scapular Nerve

Answer 10

root of C5

Question 11

Long Thoracic Nerve

Answer 11

roots of C5, C6, and C7

Question 12

Brachial Plexus Exit

Answer 12

between anterior and middle scalenes