By Ilse Goldsmith

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See the oily streak. As a man becomes older, this oil is not produced in such quantity and so the skin dries out and wrinkles. To demonstrate how this happens, all you need is some plain cooking oil, water and a sheet of paper. Cut the sheet of paper in half, and brush oil on one half only. Now wet both sheets and put them somewhere to dry. When the sheets are dry the one soaked in oil will be smooth. The one without the oil will be wrinkled. __ _------A W~ Dn ............... : ~ - "'=!! -- /- ;;or c:::-- A ::;.

Actually it is a tiny pulsation of movements of the muscles all along the canal. These movements are called peristaltic waves. " 53 If you can visualize the wormlike wave motions as a series of hands, clasping and compressing a tube, you can picture the peristaltic waves. THE PERISTALTIC WAVES PUSHING FOOD ALONG THE ALIMENTARY CANAL L The now almost totally liquid nourishment goes in to the blood stream, which distributes it to the cells. What the cells can not use becomes liquid waste. The body removes this liquid waste in various ways.

Now bone meets bone, without a cushion in between and the joint stiffens and cracks. The 22 bones that make up the skull do not move at all-with the exception of the "mandible" or lower jaw. This is hinged, so that it can move when you eat or talk. 6. The Digestive System To the body, food is fuel to make it go. However, food cannot be used just as it is. It must be broken down into simple chemicals so that it can be absorbed by the cells of the body and give them the nourishment they need. This breaking down is done by the digestive tract or "alimentary canal," which is quite simply a chemical laboratory.

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