Digestive / VISUAL EXPLAINER
How Does Your Gallbladder Concentrate Bile?
The gallbladder stores liver-made bile and absorbs water and electrolytes through its lining. Removing fluid concentrates components remaining in the lumen, rather than evaporating bile or manufacturing it there.

READ THE IMAGE
What the illustration shows
English medical poster titled “How Does Your Gallbladder Concentrate Bile?” on deep navy. A cutaway green gallbladder contains gold-olive bile and folded peach lining, both labeled. Below, tall single-layer epithelial cells with purple basal nuclei separate the gold lumen above from vascular connective tissue below. Two cyan arrows run downward across the cells into underlying tissue, labeled “Water and electrolytes absorbed.” A right-hand analogy shows two clear vessels: before has more fluid with spaced gold symbols; after has less fluid with denser symbols. Text says removing fluid concentrates bile components that remain. Symbols are qualitative, not counted molecules; cell spacing and proportions are simplified. Gold AllHumanBody.com and full slogan appear on a plain navy footer.
How to interpret this poster
- Cells, arrows and gold symbols are qualitative, not measured transport or counted molecules. Dog electron-micrograph teaching is not human tissue evidence; no fixed concentration ratio, cleanse or gallstone 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
- University of Minnesota faculty histology guide, human specimen ↗
Storage lumen, simple columnar epithelium, underlying vascular connective tissue; absent muscularis mucosae/submucosa.
- University of Leeds histology teaching ↗
Receives bile from liver and simple columnar lining; only these anatomical statements used.
- Hepatology paper: Effects of Gallbladder Function on Human Bile ↗
Water/electrolyte absorption increases intraluminal lipid and other solute concentrations.
Evidence correspondence is limited to the abstract.