linda gutierrez week 12 assignment 04-05-2018.docx - table Organ System Sign of Senescence 1 Integumentary Photoaging is a major factory in the

linda gutierrez week 12 assignment 04-05-2018.docx - table...

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Provide one example of how senescence affects each organ system below by completing the following  table: Organ System Sign of Senescence 1. Integumentary Photoaging is a major factory in the senescence of integumentary system. Melanocytes die, and hair becomes gray and thinner. The skin becomes paper thin, loses elasticity, and hangs loose, and wrinkles appear. Flat brown-black spots (age spots) appear on the back of the hands and areas exposed to sunlight. 2. Special Senses (eye/ear) Visual acuity start to decline in the twenties. In the forties, presbyopia begins, and many people develop cataracts later, in old age. Hearing loss occurs as the ossicles become stiffer and the number of cochlear hair cells declines. Taste and smell are also blunted late in life, as taste cells and olfactory buds decline in number. 3. Skeletal The result is osteopenia, which later develops into osteoporosis particularly in postmenopausal women. The joints of people in their later years have less synovial fluid
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  • Summer '18
  • kalt
  • hair cells declines, Respiratory function declines, thinner articular cartilage

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