Integumentary / VISUAL EXPLAINER
Is the Sheet Across Your Scalp a Muscle?
The galea is a broad fibrous sheet in the scalp, continuous with frontalis in front and occipitalis behind. Loose connective tissue below it permits the overlying scalp layers to move relative to the skull covering.
READ THE IMAGE
What the illustration shows
English anatomy poster titled “Is the Sheet Across Your Scalp a Muscle?” on a deep navy background. A left-facing head exposes a broad ivory fibrous galea between red frontalis at the forehead and red occipitalis behind the ear, with direct labels. A lower three-dimensional scalp section shows hair-bearing peach skin and vascular dense connective tissue grouped by a bracket, then an ivory galea, a blue open fibrous loose-connective layer, a thin pericranium, and ivory skull. Labels follow this outside-to-inside order. Text explains that loose tissue below the galea lets the scalp slide over the skull covering. Layers are simplified, not to scale. Gold AllHumanBody.com branding and the complete slogan appear below.
How to interpret this poster
- Layer thickness, vessels and nerves are illustrative rather than measured histology. Galea is outside the skull, not dura; no hair-loss, massage or headache claim.
- AI-assisted educational illustration; not physician certification, microscopy, a diagnosis or individualized medical advice.
- Fine annotations need enlargement; the full description provides an accessible text alternative.
- Display the full uncropped illustration; do not trim titles, legends or boundary annotations.
AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.
EVIDENCE / CONTEXT
Sources and what they support
- Texas Tech medical anatomy lab manual ↗
Five scalp tissue layers and loose connective tissue enabling skin/galea movement.