Neuro Atlas
Six layers of human neuroanatomy.
An interactive body and head, from body regions to neurocutaneous fields. Every structure links onward to its educational page and to the formulations mapped to it. Layers are extended as the atlas is revised.
Body Regions
Layer 1
Body Regions
The surface of the body organised into anatomical regions, each mapped to its segmental range.
Select a structure on the figure — or from the index below — to open its full context.
Schematic vector illustrations for orientation and education. Surface maps are simplified representations; published dermatome maps differ between sources.
Knowledge graph
Related knowledge
Structures in the atlas are connected to nerves, formulations, articles and reference sheets.
Formulation
FormulationOAA DUOOccipital and upper cervical application zones, formulated for the cranial dermatome transition.→FormulationPHRENIC DUOTwo-step topical concept for the phrenico-cervical field: the lower cervical, supraclavicular and shoulder application zones.→FormulationCTO DUOCervicothoracic zone concept, developed for the transition between neck and upper back.→FormulationPlexus Brachialis DUOShoulder–arm concept following the brachial plexus surface projection.→
Metamer
MetamerMetamer C0Suboccipital transition field between cranium and atlas.→MetamerMetamer C1Largely without a distinct cutaneous strip; described as a transition field.→MetamerMetamer C2Posterior scalp to the vertex and the angle of the mandible.→MetamerMetamer C3Posterolateral neck and lower occipital surface.→
Peripheral nerve
Peripheral nerveGreater occipital nerveC2 (dorsal ramus) — Posterior scalp from the superior nuchal line toward the vertex.→Peripheral nerveLesser occipital nerveC2–C3 — Lateral occipital scalp and superior auricular surface.→Peripheral nerveThird occipital nerveC3 (dorsal ramus) — Suboccipital surface and upper cervical midline.→Peripheral nerveGreat auricular nerveC2–C3 — Angle of the mandible, parotid surface and lower auricle.→
Knowledge article
Knowledge articleThe cervical plexusC1–C4: the smallest somatic plexus, with an outsized surface footprint.→Knowledge articleThe brachial plexusC5–T1: roots, trunks, divisions, cords and terminal branches.→Knowledge articleThe lumbar plexusL1–L4 within the psoas major, projecting onto the anterior thigh.→Knowledge articleThe sacral plexusL4–S4 on the posterior pelvic wall, origin of the sciatic nerve.→