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.
What to Eat the Day Before Your Colonoscopy. While the change you make to your diet prior to a colonoscopy starts three or four days prior the procedure, on the day before, you need to switch to a clear liquid diet according to the National Digestive Diseases Information Clearinghouse.