What’s on the Gas Exchange poster
A 5-row table: Feature · Why · In the lung.
Fick's law in practice.
- Large surface area — More diffusion at once — ~70 m² of alveoli
- Thin barrier — Shorter diffusion path — One cell thick
- Steep gradient — Faster diffusion — Ventilation and circulation maintain it
- Good blood supply — Removes the diffused gas — Dense capillary network
- Moist surface — Gases dissolve first — Surfactant lining
Fick's law: rate ∝ (area × concentration difference) ÷ thickness. Every adaptation optimises one of those three terms.
Questions about the Gas Exchange poster
- What’s on the Gas Exchange poster?
- A 5-row table: Feature · Why · In the lung. Fick's law in practice. Large surface area — More diffusion at once — ~70 m² of alveoli; Thin barrier — Shorter diffusion path — One cell thick; Steep gradient — Faster diffusion — Ventilation and circulation maintain it; Good blood supply — Removes the diffused gas — Dense capillary network; Moist surface — Gases dissolve first — Surfactant lining. Fick's law: rate ∝ (area × concentration difference) ÷ thickness. Every adaptation optimises one of those three terms.
- Who is the Gas Exchange poster for?
- Gas Exchange belongs to the Biology section rather than to a school year, because life science is not something one grade owns. Anyone learning physiology can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Gas Exchange poster?
- Large area, thin barrier, steep gradient, good blood supply. Every exchange surface has all four. A wall chart earns its place by being glanceable from where the work is happening, so Gas Exchange belongs on the wall where that life science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Gas Exchange?
- Blood Glucose Control, The Cardiac Cycle and The Circulatory System sit alongside Gas Exchange in the Biology section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Blood Glucose ControlThe Cardiac CycleThe Circulatory System
- Is the Gas Exchange poster free to download and print?
- Yes. Gas Exchange downloads as a free PDF with no account, no email and no watermark, like everything else in the Biology section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Gas Exchange poster print at?
- Gas Exchange is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Gas Exchange loses nothing.Printing guide
Related posters
Charts that sit alongside Gas Exchange on the same wall.
Browse every Biology poster, or start from the full catalogue.