Integumentary / VISUAL EXPLAINER
Why Is Sweat Still Salty After the Duct Recovers Salt?
An eccrine secretory coil produces fluid that passes through a duct. The duct recovers sodium and chloride before sweat reaches the surface, but does not remove every ion, so final sweat still contains salts.
READ THE IMAGE
What the illustration shows
Gold-titled poster on a deep navy background, “Sweat Ducts Recover Salt.” At left, a skin cutaway shows a pale coiled gland connected by one duct to a surface pore, with an upward blue flow arrow. A larger right cutaway shows blue duct fluid between two layers of peach epithelial cells. Gold Na+ and cyan Cl− symbols move outward through the wall toward fibrous surrounding tissue; fluid continues upward toward the skin. A lower-left inset repeats the outward salt recovery across the duct wall. A lower-right surface droplet still contains sodium and chloride symbols. Text states that recovery does not remove every ion. Ion numbers, colors, glow, cell sizes and coil geometry are illustrative, not measured physiology. Gold AllHumanBody.com and the full slogan appear in the plain navy footer.
How to interpret this poster
- Arrows summarize net epithelial transport, not exact channels or a direct opening into a blood vessel.
- Coil geometry, tissue depth, cell thickness, ion counts and concentrations are illustrative; no fixed recovery percentage or sweat rate.
- No hydration, salt-supplement, cystic-fibrosis diagnosis or treatment advice.
- 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
- Cleveland Clinic: Eccrine Glands ↗
Secretory coil and duct functions, including sodium/chloride recovery.
- The immunocytochemical localisation of anion exchangers (AE) in the reabsorptive duct of the human eccrine sweat gland ↗
Background coil secretion and duct sodium/chloride reabsorption; human conference abstract, not full experimental article.
Evidence correspondence is limited to the abstract.