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Stack #4566959
| Outer layer of skin, protects body from UV radiation, bacteria, and dehydration | Epidermis |
| Second and thickest layer of skin, contains blood vessels, hair follicles, and glands | Dermis |
| Deepest layer of skin, composed of fat and connective tissue, insulates the body, stores energy, and cushions it from impact. | Hypodermis |
| Number of sub-layers of the epidermis | 5 |
| Frequency at which the epidermis replaces itself (in days) | Every 24-45 days |
| Epidermis sub-layer that is made up of dead cells that protect the other layers | Stratum corneum |
| Epidermis sub-layer where cells flatten and decompose, also responsible for water-proof skin | Stratum granulosum |
| Epidermis sub-layer that has weirdly shaped cells and contains pre-keratin filaments | Stratum spinosum |
| Epidermis sub-layer that is always dividing and pushing up cells into the next layer | Stratum basale |
| Almost 90% of cells in the epidermis are? | Keratinocytes |
| Produces and stores keratin | Keratinocytes |
| Makes cells tough, scaly, and water-resistant | Keratin |