Making the world better, one answer at a time. Capillary: A tiny blood vessel where substances are exchanged between the blood and the body cells.he capillary is the only blood vessel where things can be  exchanged because it is so thin (one cell thick). Capillaries have  a single cell layer of squamous epithilium.
The day before the colonoscopy â Don't eat solid foods. Instead, consume only clear liquids like clear broth or bouillon, black coffee or tea, clear juice (apple, white grape), clear soft drinks or sports drinks, Jell-O, popsicles, etc. The day of the colonoscopy â As on the previous day, clear liquid foods only.
On the day of the colonoscopy. Starting 4 hours before your scheduled arrival time, start drinking the remaining half of the prep which you refrigerated overnight. Every 15 minutes, drink eight ounces of the prep until the container is empty. Drink an additional 16 ounces of clear liquids.