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C1-C4 * cutaneous nerves of neck, ear, back of head, shoulders * phrenic nerve |
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| brachial plexus divisions |
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| lateral, medial, posterior fiber bundles |
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| 5 terminal branches of brachial plexus |
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Definition
axillary musculocutaneous median ulnar radial |
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| axillary branch innervates |
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| musculocutaneous innervates |
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Definition
| biceps brachii and brachialis |
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| flexor carpi ulnaris and part of flexor digitorum profundus |
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L1-L4 *innervates thigh, abd wall, psoas muscle major nerves: femoral and obturator (I ice Gary's leg on Friday)
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L4-S4 *innervates buttock, lower limb, pelvic structures, perineum *major nerve: sciatic (SCT SIPs)
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| lateral forearm, thumb, index finger |
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| wrist extension and bicep |
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brachioradialis (forarm tendon) |
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| finger extension and wrist flexion (curling) |
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| medial forearm, ring and little finger |
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| interossei: finger abduction (spreading) and finger adduction (squeezing) |
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| medial foot and medial lower leg |
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| foot inversion (lifting) by tibialis anterior (shin muscle) |
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| lateral (outer) lower leg and top of foot |
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| toe extensors (raising) by extensors digitorum longus |
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| foot eversion by peroneus longus and brevis (lets you walk on medial borders of foot) |
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| 3 concentric rings around anus and genital regions |
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bladder, bowel and sex organs anal and pelvic muscles |
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Definition
| anal sphincter contraction |
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