Descending colon. The colon is part of the large intestine, the final part of the digestive system. Its function is to reabsorb fluids and process waste products from the body and prepare for its elimination.The colon consists of four parts: descending colon, ascending colon, transverse colon, and sigmoid colon.escending colon. The colon is part of the large intestine, the final part of the digestive system. Its function is to reabsorb fluids and process waste products from the body and prepare for its elimination.
The USDA's Recommended Dietary Allowance (RDA) for protein is .8 grams per kilogram (or .36 grams per pound) of body weight. But that's not enough for athletes, according to the ISSN, which says endurance athletes like runners need 1.0 to 1.6 grams per kilogram a day (or .45 to .72 grams per pound).
According to the Institute of Medicine, 0.8 grams of protein per kilogram of body weight, or 0.36 grams of protein per pound of body weight, is used to determine protein RDAs. Therefore, a 50-year-old woman needs a minimum of 0.36 grams of protein per pound of body weight each day, equaling about 49 grams of protein per day for a 135-pound woman.