Cervical, Lumbar, and Sacral Plexuses
Quiz yourself by guessing what should be in
each of the black rectangles below before clicking
on it to display the answer.
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| 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 |
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