UE Neurovascular Flashcards
The brachial plexus comes from which spinal nerves?
C5 - T1
3 ways the brachial plexus can be impinged/injured?
- Costoclavicular space impingement (drooping shoulders, backpack, fracture
- Excessive lateral flexion to neck can pull out nerve roots (football, fall to head/neck)
- Excessive horizontal abduction (pec minor impingement)
Dorsal Scapular Nerve innervates?
- from C3-C5 ant. rami
- Levator scapulae, rhomboids minor & major
Long thoracic nerve innervates? Runs with?
- C5-C7 ant. rami, supraclavicular
- Serratus anterior
- Runs w lat thoracic artery
3 arteries coming off aorta
- Brachiocephalic trunk (splits to R subclavian & common carotid)
- L common carotid
- L subclavian
Vertebral artery: From/To
From subclavian artery (1st branch)
To posterior brain
Runs through intervertebral foramen
Dorsal scapular artery- from/to
From transverse cervical (2nd branch off thyrocervical trunk)
To medial scapula
Suprascapular artery- From/To
From thyrocervical trunk (1st branch)
To lateral aspect of scapula, passes through scapular notch, under scapular spine, becomes circumflex scap
Internal thoracic artery: From/To
From subclavian artery (2nd branch)
Runs deep to rib cage, to internal thorax and mammary
Supreme intercostal artery: from/to
From costocervical trunk (4th branch off subclavian)
To between 1st and 2nd ribs, anastamoses with superior thoracic
Superior thoracic artery: From/TO
From axillary I
To 1st and 2nd intercostal spaces, anastamoses with supreme thoracic
Thoracoacromial trunk: From/To
From Axillary II, 1st branch
To Pecs, deltoids, mammary glands
Lateral thoracic artery: from/to
From Axillary II (2nd branch)
To serratus anterior, runs w long thoracic N
Subscapular artery: from/to
From axillary III (3rd branch)
To: branches into thoracodorsal and circumflex scapular
Scapular arteries and nerves that run together (4 pairs)
- Dorsal Scapular A and N
- Suprascapular A and N
- Axillary N and Post Humeral Circumflex A
- Radial N and Profunda brachii A
