What’s on the The Skin poster
A definition and 6 facts worth remembering.
A layered barrier that regulates temperature, blocks pathogens, senses the world, prevents water loss and synthesises vitamin D. It is an organ by every definition.
- Epidermis: the outer barrier, no blood supply, replaced about monthly.
- Dermis: collagen, blood vessels, nerves, hair follicles, sweat glands.
- Hypodermis: fat and connective tissue, insulation and cushioning.
- Melanin in the epidermis absorbs UV.
- About 2 m² and 4 kg in an adult.
- Sweat cools by evaporation, not by leaving the body.
- Area — ~2 m²
- Layers — 3
- Renewal — ~28 days
- A first-degree burn affects only the epidermis; a second-degree burn reaches the derm…
Skin makes vitamin D from UVB. Behind glass produces none, because glass blocks that wavelength.
Questions about the The Skin poster
- What’s on the The Skin poster?
- A definition and 6 facts worth remembering. A layered barrier that regulates temperature, blocks pathogens, senses the world, prevents water loss and synthesises vitamin D. It is an organ by every definition. Epidermis: the outer barrier, no blood supply, replaced about monthly.; Dermis: collagen, blood vessels, nerves, hair follicles, sweat glands.; Hypodermis: fat and connective tissue, insulation and cushioning.; Melanin in the epidermis absorbs UV.; About 2 m² and 4 kg in an adult.; Sweat cools by evaporation, not by leaving the body.; Area — ~2 m²; Layers — 3; Renewal — ~28 days; A first-degree burn affects only the epidermis; a second-degree burn reaches the derm…. Skin makes vitamin D from UVB. Behind glass produces none, because glass blocks that wavelength.
- Who is the The Skin poster for?
- The Skin belongs to the Body & health section rather than to a school year, because health is not something one grade owns. Anyone learning anatomy can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the The Skin poster?
- The largest organ in the body, and the only one you can inspect without equipment. A wall chart earns its place by being glanceable from where the work is happening, so The Skin belongs on the wall where that health work actually happens, within glancing distance, rather than filed away.
- What other posters go with The Skin?
- Blood, Blood Types and The Body Systems sit alongside The Skin in the Body & health section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.BloodBlood TypesThe Body Systems
- Is the The Skin poster free to download and print?
- Yes. The Skin downloads as a free PDF with no account, no email and no watermark, like everything else in the Body & health 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 The Skin poster print at?
- The Skin 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 The Skin loses nothing.Printing guide
Related posters
Charts that sit alongside The Skin on the same wall.
Browse every Body & health poster, or start from the full catalogue.