Layers of the Skin

Stratum Corneum (Horny Layer 1)

Outermost layer of the epidermis, composed of corneocytes

Stratum Lucidum (Clear Layer 2)

Clear, transparent layer of the epidermis under the stratum corneum; thickest on the palms of the hands and soles of the feet

Stratum Granulosum (Grainy Layer 3)

Layer of the epidermis composed of cells filled with keratin that resemble granules: replaces cells shed from the stratum corneum

Stratum Spinosum (Spiny Layer 4)

Layer of the epidermis above the stratum germinativum (basal) layer containing desmosomes, the intercellular connections made of protein

Stratum Germinativum (Basal Layer 5)

Active layer of the epidermis: cell mitosis takes place here that produces new epidermal skin cells and is responsible for growth

Papillary Layer

First layer of the dermis: contains dermal papillae which forms the epidermal/dermal junction. Nerve endings are also found here

Reticular Layer

Denser and deeper layer of the dermis, comprised mainly of collagen and elastin

Epidermis (1)

The outermost layer of the skin; protects the body from external factors

Dermis (2)

The middle layer of the skin; contains bloods vessels, sweat glands, hair follicles, and nerve endings

Hypodermis (Subcutaneous tissue 3)

The deepest layer of the skin; composed of fat cells and connective tissue, insulates and protects the body