1. Integumentary System A system An organ The biggest!

2. Introduction Largest organ of the body Surface area Mass One square inch contains… Complex Continuous

3. Layers of the Skin Epidermis Dermis Subcutaneous (hypodermis)

4. Functions Protection Water balance Temperature Regulation Waste Disposal Receptor organs Vitamin D Production

5. Epidermal Layers, part I Stratum Basale (Germanativum) Stratum Spinosum – Keratinocytes Stratum Granulosum (Granular Layer) – Keratohyaline

6. Epidermal Layers, Part II Stratum Lucium (Clear Layer) – Eleidin Stratum Corneum – Keratin – Glycolipids