GPT Image Prompt
How to useCopy this prompt and paste it into ChatGPT, Gemini, Nano Banana, or your favorite AI image tool. Adjust details if needed.
Create a scientifically accurate vertical 2:3 high school biology poster explaining how the kidneys filter blood and form urine. Use a horizontal-feeling composition built around one realistic human kidney cutaway entering from the upper-left edge. From the kidney, extend one dramatically enlarged nephron across the poster as a long winding biological pathway, with the glomerulus and Bowman’s capsule leading into the proximal tubule, loop of Henle, distal tubule, and collecting duct. Let the text follow the nephron’s changing direction rather than appearing in matching cards. Avoid a centered full body, two symmetrical kidneys, a standard process grid, or a dark museum-style display.
Place the title “HOW THE KIDNEYS FILTER BLOOD” along the curve of the kidney’s outer edge. Near the renal artery, add the smaller line “Millions of nephrons help maintain internal balance.” Use six large pathway labels positioned beside broad open regions of the nephron. “1. FILTRATION” — “Pressure forces small molecules out of the blood.” At the glomerulus and Bowman’s capsule, show water, ions, glucose, urea, and other small solutes entering the filtrate while blood cells and most proteins remain inside the capillaries. “2. SELECTIVE REABSORPTION” — “Useful substances return to nearby capillaries.” Along the proximal tubule, show glucose, amino acids, ions, and much of the water returning to the blood. “3. WATER AND SALT BALANCE” — “The loop helps create a concentration gradient.” Along the loop of Henle, use restrained blue water arrows and gold ion markers in anatomically appropriate regions without depicting the loop as a pump. “4. SECRETION” — “Additional wastes and ions enter the tubule.” At the distal tubule, distinguish secretion from filtration by showing selected substances moving from nearby capillaries into the tubular fluid. “5. FINAL WATER ADJUSTMENT” — “Water reabsorption changes with the body’s needs.” Along the collecting duct, show variable water return to surrounding tissue and blood. “6. URINE LEAVES” — “Remaining fluid becomes urine and enters the ureter.” Show the collecting duct emptying toward the renal pelvis and ureter.
Include one clean comparison strip with “BLOOD ENTERING” followed by “water, glucose, ions, urea, proteins, blood cells” and “URINE LEAVING” followed by “water, urea, excess ions, other wastes.” Near the collecting duct, add the concise hormone note “ADH increases water reabsorption.”
Use realistic medical illustration with translucent kidney tissue, plausible vessel and tubule connections, pale cream nephron structures, warm anatomical reds, muted kidney brown, blue water arrows, gold ion markers, and a light neutral background. Keep the science precise: blood cells should not enter the nephron under normal conditions, most filtered water should return to the body, glucose should not normally appear in the final urine, filtration must remain distinct from active secretion, and kidney function should include fluid, ion, and internal-balance regulation rather than only toxin removal. Use exactly six main pathway labels and two supporting notes, keep every explanation under 12 words, and place all text in calm open areas away from dense vessel networks for clear mobile readability.