1. THE BRACHIAL PLEXUS

2. WHAT IS A PLEXUS???

3. BRACHIAL PLEXUS 5!!!! 5 ROOTS—ANTERIOR RAMI BEGINS AT C5
5 TERMINAL NERVES

4. ROOTS
ANTERIOR RAMI OF C5-T1
DORSAL SCAP. N.
LNG. THORACIC N.

5. TRUNKS SUPERIOR MIDDLE INFERIOR NERVES NERVE TO SUBCLAVIUS
SUPRASCAPULAR NERVE
MIDDLE
INFERIOR

6. DIVISIONS
ANTERIOR DIVISION
POSTERIOR DIVISION

7. CORDS LATERAL CORD MEDIAL CORD LAT. PECTORAL N. MED. PECTORAL N.
MED. BRACHIAL CUTANEOUS N.
MED. ANTEBRACHIAL CUTANEOUS N.

8. CORDS (CONTINUED) POSTERIOR CORD THORACODORSAL NERVE
SUBSCAPULAR NERVES

9. TERMINALS
AXILLARY
RADIAL
MUSCULOCUTANEOUS
MEDIAN
ULNAR

10. AXILLARY NERVE DELTOID TERES MINOR
UPPER LATERAL BRACHIAL CUTANEOUS NERVE

11. RADIAL NERVE POSTERIOR COMPARTMENT OF THE ARM AND FOREARM
LOWER LATERAL BRACHIAL CUTANEOUS NERVE
POSTERIOR ANTEBRACHIAL CUTANEOUS NERVE
SUPERFICIAL BRANCH

12. MUSCULOCUTANEOUS NERVE
ANTERIOR COMPARTMENT OF THE ARM
LATERAL ANTEBRACHIAL CUTANEOUS N.

13. MEDIAN NERVE
ANTERIOR COMPARTMENT OF THE FOREARM EXCEPT 1 & 1/2 MUSCLES:
FLEXOR CARPI ULNARIS
MEDIAL 1/2 OF FLEXOR DIGITORUM PROFUNDUS
PALMAR CUTANEOUS BRANCH

14. ULNAR NERVE MUSCLES OF THE HAND EXCEPT 1 & 1/2 MUSCLES:
ONE: MUSCLES OF THE THENAR EMINENCE
ONE-HALF: THE LATERAL TWO LUMBRICALS
PALMAR CUTANEOUS BRANCH
DORSAL CUTANEOUS BRANCH

15. OTHER SENSORY NERVES
SUPRACLAVICULAR NERVES
C3 & C4
INTERCOSTAL NERVES

16. DERMATOMES

17. SENSORY INNERVATION
AXILLARY
RADIAL
MUSCULOCUTANEOUS
MEDIAN
ULNAR