Brachial Plexus Flashcards
What are the Roots of the Brachial Plexus
C5, C6, C7, C8, T1
Why is there a C8 Root for the Brachial plexus even though there are only 7 Cervical Vertebrae
This root is between the C7 and T1 vertebrae and is not specific to one
What are the three Brachial Plexus trunks and what roots make up each of them
Upper/Superior Trunk - C5, C6
Middle Trunk - C7
Lower/Inferior Trunk - C8, T1
What Nerve comes out of the C5 root directly
Dorsal Scapular Nerve
**Rhomboids (Major & Minor), Levator Scapulae
What Nerve comes out of the C5, C6 & C7 Roots directly
Long Thoracic Nerve
**Serratus Anterior
What Nerve(s) comes out of the Upper Trunk directly
Suprascapular Nerve
Nerve to Subclavius
- *Supraspinatus, Infraspinatus, Shoulder Joint
- *Subclavius
What divisions do each of the Brachial Plexus trunks branch into
Anterior and Posterior
What makes up the Lateral Cord of the Brachial Plexus
Anterior divisions of the upper & middle trunks
What makes up the Posterior Cord of the Brachial Plexus
Posterior divisions of each of the trunks
What makes up the Medial Cord of the Brachial Plexus
Anterior Division of the Lower Cord
What Non-Terminal Nerve(s) does the Lateral Cord Branch into
Lateral Pectoral Nerve
**Pec Major
What Non-Terminal Nerve(s) does the Posterior Cord Branch into
Upper Subscapular Nerve
Thoracodorsal Nerve
Lower Subscapular Nerve
- *Subscapularis
- *Latissimus Dorsi
- *Subscapularis, Teres Major
What Non-Terminal Nerve(s) does the Medial Cord Branch into
Medial Nerve
Medial Brachial Cutaneous Nerve
Medial Antebrachial Cutaneous Nerve
- *Pec Major, Pec Minor
- -
- -
What are the 5 Terminal Branches of the Brachial Plexus
MARMU
Musculocutaneous Axillary Radial Median Ulnar
What Cord(s) make up the Musculocutaneous Nerve
Lateral Cord
