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.
The day of the colonoscopy: Clear fluids from the list above. If you are having a colonoscopy only you can drink. clear fluids up until 2 hours before your appointment time. If you are having a. gastroscopy prior to the colonoscopy then nothing to drink for 6 hours prior to the. appointment time.