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BOARDSspinal anatomy
Cervical, Lumbar, and Sacral Plexuses
nerves | spinal roots | structures served |
---|---|---|
Lesser Occipital | C2, C3 | sensory- posterolateral neck |
Greater Auricular | C2, C3 | sensory- ear & parotid gland |
Transverse cervical | C2, C3 | sensory- anterior & lateral neck |
Supraclavicular | C3, C4 | sensory- shoulder & anterior chest |
Ansa cervicalis | C1- C4 | motor- geniohyoid & infrahyoid muscles of neck |
Segmental branches | C1- C5 | Motor- neck & scalenes, levator, trapezius, SCM |
Phrenic | C3, C4 & C5 | motor- diaphragm |
Femoral | L2- L4 | Sensory- thigh, leg, foot, hip, knee joints Motor- anterior thigh, psoas, pectineus, iliacus |
Obturator | L2-L4 | Sensory- medial thigh & hip joint motor- adductors, gracilis & obturator externus |
Lateral Femoral Cutaneous | L2, L3 | sensory- lateral thigh, branches to peritoneum |
Iliohypogastric | L1 | sensory- lower abdomen, lower back & hip, anterlateral abdominal wall & pubic region |
Ilioinguinal | L1 | sensory- external genitalia, thigh & abdominals |
Genitofemoral | L1, L2 | sensory- scrotum, labia, thigh & cremasterics |
Sciatic | L4, L5, S1-S3 | motor- tibial & common peroneal |
Tibial | L4-S3 | sensory- posterior leg & foot motor- all muscles back of thigh, leg & foot |
Common Peroneal | L4-S2 | sensory- anterior leg & dorsum foot motor- peroneals, tibialis ant., externsion of toe |
Superior Gluteal | L4, L5, S1 | Motor- gluteus medius, minius & Tensor facia |
Inferior Gluteal | L5-S2 | Motor- gluteus maximus |
Posterior Femoral Cutaneous | S1-S3 | sensory- buttock, thigh, popliteal, calf & heel |
Pudendal | S2-S4 | sensory- muscles of perineum motor- external anal sphincter |