Simple Cell Structure Diagram of Alveoli Gas Exchange Cycle

Biological diagram infographic titled "Alveoli and Gas Exchange Cycle" centered on a clean labeled diagram of human respiratory alveoli, using a circular cycle with directional arrows around a central isometric 3D cross-section of an alveolar sac and surrounding capillaries. Educational for kids ages 8-12, simple and easy to read, scientifically accurate, tasteful human anatomy, all text sharp and readable. Show 5 labeled parts/stages arranged evenly around the circle, each connected with a thin leader line to the central diagram, and each containing a short heading in English plus a one-line function description in English. Labels to render exactly as: "Bronchiole" — "Tiny airway that carries air to the alveoli."; "Alveoli" — "Small air sacs where oxygen enters the blood."; "Capillaries" — "Thin blood vessels that flow around each alveolus."; "Oxygen In" — "Oxygen moves from the air into the bloodstream."; "Carbon Dioxide Out" — "Carbon dioxide moves from the blood into the alveoli to be exhaled." Include clear circular flow arrows showing inhaled air reaching alveoli, oxygen transfer into blood, carbon dioxide transfer out, and exhalation pathway. Visual style: isometric 3D, pastel soft palette, friendly educational mood, smooth simplified forms, gentle pinks, soft reds, pale blues, light lavender, mint accents, clean white background. Include subtle legend icons or arrow markers for airflow and blood flow. Maintain biologically accurate proportions and anatomical naming, medical-textbook clarity, editorial scientific illustration, vector-clean lines, no photographic textures. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no graphic gore, no real patient photos, no watermarks No graphic medical gore, no real patient photographs, no surgical blood. For human anatomy, keep illustrations educationally tasteful. For animal anatomy, no cruelty imagery. Scientifically accurate labeling and proportions.