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.

Layers

Planned

Viscerotomes · Sclerotomes · Myotomes · Autonomic pathways · SRST mapping

Geometry 0/8 verified

Sacrum

Body Regions · Layer 1

Sacrum

S1 · S2 · S3 · S4 · S5

Sacral surface projection across the posterior pelvic base and perineal field.

Geometry: schematic placeholder. This structure is a data object awaiting verified vector geometry; the projection shown asserts no anatomical detail.

Formulation

Metamer

Peripheral nerve

Plexus

Sacral plexusGluteal region, posterior thigh, leg, foot and perineum.→

Download

Neuro Atlas reference sheetsPDF · 4.2 MB · Open — Printable dermatome, plexus and neurocutaneous overview sheets.→

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.→

Download

DownloadNeuro Atlas reference sheetsPDF · 4.2 MB · Open — Printable dermatome, plexus and neurocutaneous overview sheets.→