Most Popular. An impact driver looks similar to a drill/driver but for one noticeable distinctionâinstead of a keyless chuck, it has a collet that accepts hex-shanked driver bits. This tool is specially engineered to do one job: drive screws, which it does faster and easier than any other tool. Impact drivers can drive long, large fastenersâincluding fat lag screwsâthat would stall the very best drill/driver.
Sigmoid colon. The sigmoid colon (pelvic colon) is the part of the large intestine that is closest to the rectum and anus. It forms a loop that averages about 35-40 cm in length. The loop is typically shaped like a Greek letter sigma (Ï) or Latin letter S (thus sigma + -oid).
The descending colon is located on the left side of the large intestine, extending from the bend below the spleen to the sigmoid colon. The descending colon stores the food to be emptied into the rectum.The colon is held in place by peritoneum, a thin layer of tissue that supports the abdominal organs.ts 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.