Epidermis and Dermis: Understanding the Layers of Skin

The skin has two main layers:

Epidermis

Outermost layer; keratinized stratified squamous epithelium (multiple tightly packed cell layers containing keratin). Functions: protection, prevents water loss, produces vitamin D.

Dermis

Inner layer; connective tissue (cells and fibers). Provides strength, elasticity, and contains blood vessels, nerves, hair follicles.

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