Why Doesn’t Your Stomach Digest Itself?

READ THE IMAGE

What the illustration shows

Medical illustration titled “Why Doesn’t Your Stomach Digest Itself?” with the subtitle “Protection is a team effort.” A cutaway stomach containing brown-orange acidic fluid points to an enlarged lining. Translucent mucus coats a continuous layer of columnar surface cells and dips into gastric pits, with simplified gland-like structures and enclosed blood vessels beneath. An upper inset shows bicarbonate, labeled HCO₃⁻, within the mucus and a tight junction between adjacent epithelial cells near their upper edges. A lower inset shows a short upward arrow for cell repair and renewal along the pit lining, above a vessel containing red blood cells. The image explains protection through mucus and bicarbonate, connected epithelial cells, ongoing renewal and supporting blood flow. Structures are enlarged and not to scale. Footer: AllHumanBody.com.

How to interpret this poster

• Gland and pit detail is schematic, not an exact histology plate.
• No fixed acidity, turnover time, ulcer diagnosis or prevention promise is implied.
• 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.

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

1. Anatomy and Physiology 2e: 23.4 The Stomach ↗

   Mucus, bicarbonate, epithelial junctions and replacement in the mucosal barrier.

2. Gastroduodenal mucosal protection ↗

   A dynamic barrier involving mucus, epithelial restitution and mucosal vasculature.

   Evidence correspondence is limited to the abstract.