Integumentary Tissues

The integumentary tissues (skin, hair, nails) cover and protect the body. Two of the more classical and reproducible manifestations of aging can be seen in this system. The depigmentation of hair to gray or white is an almost universal aging effect given sufficient survival. Wrinkling of the skin, due to alteration in connective tissue composition, is another consequence of aging; it should be assessed by the changes in skin texture only in the non-sun-exposed regions of the body. Beyond the cosmetic consequences of the aging integumentary tissues, wound healing is a health-relevant consideration. Healing of wounds is slower with increasing age, but the resulting scars have the same tensile strength. Reduced recruitment of vessels of the microvascular is a function of aging.

The skin is an endocrine organ. Vitamin D is produced from the conversion of 7-hydroxy-cholesterol to cholecalciferol in the dermis of the skin. The efficiency of vitamin D decreases with age, such that older persons need a longer exposure to solar radiation to produce a given quantity of the vitamin.

How To Reduce Acne Scarring

How To Reduce Acne Scarring

Acne is a name that is famous in its own right, but for all of the wrong reasons. Most teenagers know, and dread, the very word, as it so prevalently wrecks havoc on their faces throughout their adolescent years.

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