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EMG nerve roots
EMG nerve roots in IOM
| Question | Answer |
|---|---|
| CN IX | Stylopharnygeus |
| CN V | Temporalis, masseter |
| C2 | Sternocleidomastoid |
| C3 (2) | Trapezius, sternocleidomastoid |
| C4 (2) | Trapezius, levator scapulae |
| C5 (2) | Deltoid, biceps |
| C6 (5) | Biceps, triceps, brachioradialis, pronator teres, flexor carpi radialis |
| C7 (4) | Triceps, pronator teres, flexor carpi radialis, forearm extensors |
| C8 (3+) | Triceps, ulnar forearm muscles, all hand intrinsic muscles (APB, 1st doral interossei, adductor digiti minimi) |
| T1 | Intrinsic hand muscles, flexor carpi ulnaris |
| T2 | Intercostal muscles, paraspinal muscles |
| T3 | Intercostal muscles, paraspinal muscles |
| T4 | Intercostal muscles, paraspinal muscles |
| T6 | Intercostal muscles, paraspinal muscles, upper rectus abdominis |
| T7 | Upper rectus abdominis, paraspinal muscles, intercostal muscles |
| T8 | Upper rectus abdominis, paraspinal muscles, intercostal muscles, middle rectus abdominis |
| T9 | Middle rectus abdominis, paraspinal muscles, intercostal muscles |
| T10 | Middle rectus abdominis, lower rectus abdominis, paraspinal muscles, intercostal muscles |
| T11 | Lower rectus abdominis, paraspinal muscles, intercostal muscles |
| T12 | Lower rectus abdominis, paraspinal muscles, intercostal muscles |
| L1 (3 +/-2) | Quadratus lumborum, paraspinals, cremaster +/- iliopsoas +/- internal oblique |
| L2 (4) | Iliopsoas, adductor longus, quadriceps, adductor magnus |
| L3 (4) | Quadriceps, adductor longus, adductor magnus, iliopsoas |
| L4 (4) | Quadriceps, tibialis anterior, adductor longus, adductor magnus, iliopsoas |
| L5 (3) | Tibialis anterior, peroneus longus, adductor magnus |
| S1 | Gastrocnemius, abductor hallucis |
| S2 | Gastrocnemius, abductor hallucis |
| S2-S5 | Anal sphincter, urethral sphincter |