THE BRACHIAL PLEXUS

WHAT IS A PLEXUS???

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

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

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

DIVISIONS ANTERIOR DIVISION POSTERIOR DIVISION

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

CORDS (CONTINUED) POSTERIOR CORD THORACODORSAL NERVE SUBSCAPULAR NERVES

TERMINALS AXILLARY RADIAL MUSCULOCUTANEOUS MEDIAN ULNAR

AXILLARY NERVE DELTOID TERES MINOR UPPER LATERAL BRACHIAL CUTANEOUS NERVE

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

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

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

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

OTHER SENSORY NERVES SUPRACLAVICULAR NERVES C3 & C4 INTERCOSTAL NERVES

DERMATOMES

SENSORY INNERVATION AXILLARY RADIAL MUSCULOCUTANEOUS MEDIAN ULNAR