<P> The mucosa is the innermost layer of the gastrointestinal tract . It surrounds the lumen of the tract , and comes into direct contact with digested food ( chyme ) . The mucosa itself is made up of three layers : </P>
<P> The mucosa is the innermost layer of the gastrointestinal tract . It surrounds the lumen of the tract , and comes into direct contact with digested food ( chyme ) . The mucosa itself is made up of three layers : </P>
which layer of the digestive tract is in direct contact with digested food
which layer of the digestive tract is in direct contact with digested food
mucosa
mucosa