Referral-A referral is an authorization from your primary care physician to see a specialist or another doctor. It does not mean your insurance company will cover the cost. Pre-approval-A pre-approval is when your insurance company OKs paying for a treatment before you take it.
112 / MARCH 2001, VOL. 46, NO. 3 The Definition of Dietary Fiber 1 âDietary fiber is the edible parts of plants or analogous carbohydrates that are resistant to digestion and ab-sorption in the human small intestine with complete or partial fermentation in the large intestine.ll nondigestible, fermentable polysaccharides, whether they are polyglucoses such as cellulose or beta-glucans, or polyfructoses such as inulin, or het-eropolymers such as arabinoxylans and arabinogalactans, or analo-gous carbohydrates, are included in the definition of dietary fiber.
Fiber is also known as roughage. It is the indigestible part of plant foods that pushes through our digestive system, absorbing water along the way and easing bowel movements.The word fiber (North American) can also be spelled fibre (British).here are two broad types of fiber, soluble and insoluble. 1  Soluble fiber dissolves in water. 2  It changes as it goes through the digestive tract, where it is fermented by bacteria. 3  As it absorbs water it becomes gelatinous.