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===About The Wall of the Small Intestines as an Exchange Surface===
: When food is consumed and [[digestDigestion|digested]]ed the [[nutrient]]s can [[Diffusion|diffuse]] across the walls of the [[Small Intestine|small intestine]] into the [[blood]] stream.
: The wall of the [[Small Intestine|small intestine]] is [[adaptation|adapted]] to allow the movement of [[nutrient]]s from the food into the [[blood]] stream in the following ways:
:*The [[Small Intestine|small intestine]] is long to give it a large [[Surface Area|surface area]].
===About The Wall of the Small Intestines as an Exchange Surface===
: When food is consumed and [[digestDigestion|digested]]ed the [[nutrient]]s can move across the walls of the [[Small Intestine|small intestine]] into the [[blood]] stream by [[diffusion]] or [[Active Transport|active transport]].
: The wall of the [[Small Intestine|small intestine]] is [[adaptation|adapted]] to allow the movement of [[nutrient]]s from the food into the [[blood]] stream in the following ways:
:*The [[Small Intestine|small intestine]] is long to give it a large [[Surface Area|surface area]].