Anatomy & Physiology › Section E · The integumentary system › Topic E.1
Layers of the skin
Skin looks like a simple wrapping, yet it is an organ built from stacked tissues, each layer with its own cells and its own job. Knowing the layers in order, from the surface inwards, explains why some cuts bleed and others do not, how skin renews itself and where its colour comes from.
In this topic
- Skin as an organ
- The epidermis
- Stratum basale: where new cells are made
- Stratum spinosum and stratum granulosum
- Stratum lucidum and stratum corneum
- Worked example: a paper cut and a splinter
- The dermis
- The hypodermis
- Where skin colour comes from
- Worked example: reading colour changes
- Common mistakes to avoid
- Key takeaways
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