It has a large surface area, due to small microvilli on its surface making it an efficient organ of absorption.
It has a good blood supply meaning the glucose and amino acids after absorbed willl be carried away quickly so the concentration gradient is maintained and more substances will diffuse across
the walls of the villus is thin, meaning diffusion is quicker
there is a lacteal in the villus that carries the broken down fats- now glycerol and fatty acids- towards the blood system later on.
The most important is the large surface areaaa. :) revising biology right now for GCSE mocks.
It has a good blood supply meaning the glucose and amino acids after absorbed willl be carried away quickly so the concentration gradient is maintained and more substances will diffuse across
the walls of the villus is thin, meaning diffusion is quicker
there is a lacteal in the villus that carries the broken down fats- now glycerol and fatty acids- towards the blood system later on.
The most important is the large surface areaaa. :) revising biology right now for GCSE mocks.