5.2 (Brachial Plexus) Flashcards
1
Q
The brachial plexus originates from…
A
Anterior rami of C5-T1.
2
Q
The roots pass through…
A
Gap between the anterior and middle scalene muscle with the subclavian artery.
3
Q
post-synaptic sympathetic fibers come from…
A
Middle/inferior cervical ganglion.
4
Q
Path of breakdown of nerves through plexus
A
ROOTS –> TRUNKS –> DIVISIONS –> CORDS –> BRANCHES
5
Q
The roots are formed by
A
C5, C6, C7, C8, and T1
6
Q
superior trunk
A
C5 and C6
7
Q
middle trunk
A
C7
8
Q
inferior trunk
A
C8/T1
9
Q
Trunks divide into…
A
Anterior and posterior Divisions
10
Q
Posterior cord formed by
A
three posterior divisions
11
Q
lateral cord formed by
A
anterior division from the superior and middle trunk
12
Q
medial cord formed by
A
The anterior division from the inferior trunk
13
Q
5 terminal branches
A
- Musculocutaneous
- Axillary
- Radial
- Median
- Ulnar
14
Q
Collateral Branches
A
- Dorsalscapular - C5
- Long thoracic - C5, C6, and C7 Trunks
- Suprascapular - superior trunk
- Subclavian - superior trunk
