PSY 402 Chapter Notes - Chapter 4: Insomnia, Dehydroepiandrosterone, Late-Onset Hypogonadism
23 Jan 2014
School
Department
Course
Professor
Document Summary
The outermost layer (epidermis): a thin covering of skin cells that protects the deeper 2 layer: over time, epidermal skin cells lose their regular patterning. Last is the subcutaneous fat layer: provides cushioning with smooths the curves of the arms, legs and face: this layer thins in middle adulthood- which causes less support for the layers above it which causes sagging and wrinkles. Skin discolouration to loss of fat: capillaries and arteries in the skin may dilate and generally are more visible due, varicose veins may develop and appear in the legs. Older adults experience bone loss in the jaw, changes in the cartilage in the nose and ears cause them to become longer- altering the faces shape. Genetic background plays a role in the rate of skin aging. Fair-skinned people tend to display more rapid effects of aging: photoaging: age changes caused by radiation, uv rays accelerate the process of cross-linking and increase the production of free radicals.
