Question

which take care of wear and tear of the
body tissues.​

Answer 1

Answer:

The wear and tear theory of aging, one of several theories, asserts that the effects of aging are caused by progressive damage to cells and body systems over time.1  Essentially, our bodies "wear out" due to use. Once they wear out, they can no longer function correctly.

The wear and tear theory is deeply ingrained in our thinking, and it is the theory you will often hear expressed in conversation and our culture. It was first proposed scientifically by German biologist Dr. August Weismann in 1882.2  We simply expect that the body, as a mechanical system, is going to break down with use over the years. The wear and tear theory of aging may also be referred to as simple deterioration theory or fundamental limitation theory.

In considering the different theories of aging, the wear and tear theory may at first appear to be the most reasonable. It fits with our experience and carries familiar patterns. Yet there are other theories which, instead of viewing aging as a random wear and tear process, view aging as a more intentional process, a planned event. That aging may be more than just an accumulation of damage - as occurs in cars - is a relatively new field of study.

Before discussing evidence in support of wear and tear and that which leads us away from this theory, it's helpful to briefly review the different aging theories.

Answer 2

Answer:

There are many theories which take care of wear and tear of the body tissues due to ageing.

Explanation:

WEAR AND TEAR OF BODY TISSUES

Many internal and external factors play a role in wear and tear of human body tissues. Exposure to toxins and UV light damages genes. When own body metabolises oxygen it generates free radicals that are destructive for body’s own tissues. This is called oxidative damage to cells. Free radicals hinders protein functioning and thus body starts to get old and senescence.

Also when body’s cells divide and divides, there occurs shortening of telomeres present at tip of cells which shorten over time and eventually results in a cell which no longer replicates and thus body ages.

#SPJ3