Anatomy & Physiology: Chapter 5 Skin

Outer layer of skin consists of four or five sublayers depending on its location

• Epidermis

• Stratum corneum

• Stratum lucidum

Dead, squamous epithelial cells that are filled with keratin, they are constantly being shed from the body's surface

• epidermis

• stratum corneum

• stratum basale

found on the palms of the hands, soles of the feet and fingertips

• stratum lucidum

• stratum basale

• epidermis

gradually dies as they reach the surface of the skin, consist of flattened epithelial cells

• stratum basale

• stratum granulosum

• stratum corneum

Underneath the stratum granulosum

• stratum basale

• epidermis

• stratum spinosum

single layer of column-shaped cells that are actively dividing; deepest sublayer of the epidermis

• veins

• arteries

• stratum basale

gives skin its toughness

• veins

• collagen

• elastin

gives skin its stretchiness

• veins

• hair follicles

• elastin

supply oxygen-rich blood to the dermis

• arrector pili muscle

• sebaceous gland

• arteries

transport oxygen-poor blood away from the dermis

• arrector pili

• veins

• eccrine glands