Back and upper limbs
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Brachial plexus is comprised of
Anterior rami of Cspine nerves C5-T1
Upper limb transition points (3)
Axilla Cubital fossa Carpal tunnel
Superficial back muscles innervated by brachial plexus
Latissimus dorsi, levator scapulae, rhomboid major and minor
classify superficial, intermediate, and deep back muscles as extrinsic or intrinsic
Superficial always extrinsic, deep always intrinsic,
The extrinsic muscles of the back are innervated by
anterior rami of spinal nerves or CNXI
Largest group of intrinsic back muscles
erector spinae
The intrinsic muscles of the back are innervated by
posterior rami of spinal nerves