Final answer:
The aging process leads to the deterioration of collagen and elastin fibers, resulting in the formation of wrinkles. These changes are exacerbated by factors such as UV radiation, and are part of the broader spectrum of skin changes that occur with age, including reduced skin elasticity and moisture retention.
Step-by-step explanation:
The deterioration of collagen and elastin fibers during the aging process causes wrinkles. Over time, the skin loses its elasticity, and factors such as UV radiation can accelerate this process by damaging collagen fibers. This results in the aging of skin and the formation of wrinkles. In addition to the development of wrinkles, aging skin also experiences other changes, such as thinner and drier tissues, reduced elasticity which also contributes to other health issues such as high blood pressure, and a decrease in the functionality of accessory structures leading to thinner hair and nails. As we age, the ability of skin to retain moisture diminishes, causing a further breakdown of skin structure, accompanied by a weakening of underlying muscles.