Explain about the Integumentary Tissues?
The skin, hair and nails covering and protecting the body are the intengumentary tissues. Depigmentation of hair and wrinkling of skin (due to alteration in connective tissue composition) is observed with aging. Wound healing becomes slower with age. The dermis of skin where 7-hydroxy cholesterol is converted to cholecalciferol (Vitamin. D) Also decreases with age, thus the older persons require longer exposure to sun to produce the given quantity of the vitamin.