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.
It is best to eat a light meal and drink extra liquids following a colonoscopy, according to Colon & Rectal Surgery Associates. In general, it is safe to eat immediately after your procedure. Keep Learning.