Muscles on the Inside, Skin, Hair, and Nails on the Outside … Key Body Parts
Muscles–essential for movement-don’t get much thought until we feel it in the arms moving that sofa. We spend a lot more time on skin, hair. and nails … making them look pretty.
We will briefly discuss skin, hair, nails, and muscles. We already know the skin is our protective covering and is large enough to coat our entire body.
One of our group members, a male weighing sixty-eight kilograms (150 pounds), considers this fact: if his skin were stretched out flat, it would cover about 1.8 square meters (slightly larger than the size of a single bed) and would weigh four kilograms (nine pounds), which is the weight of a large baby!
All this skin contains nerve endings and protects blood vessels, bones, muscles, and organs. We ponder how, thanks to varying amounts of melanin pigmentation, this resilient covering can be dark, olive, pink, brown, or extremely fair.
We think about the abundant oxygen that helps the growth of new cells. It makes up the sixteen trillion skin cells in each of our bodies, as well as replacing the 3.6 kilograms (eight pounds) of skin cells that we lose each year (when put together, they’d be roughly…
