!! absorbption in the small intestine

Question 1

what happens to the products of digestion in the small intestine

Answer 1

they are absorbed into the bloodstream

Question 2

adaptions of the small intestine for better digestion

Answer 2

very long, (humans approx. 5 meters) provides large SA for absorption of molecules by digestion

interior covered in millions of villi, massively increases SA for absorption of molecules

Question 3

how do villi aid for the absorption of molecules

Answer 3

massively increase SA of the small intestine

on surface of villi, millions of microvilli which increase the SA even further

very good blood supply so bloodstream rapidly removes products of digestion, increasing the concentration gradient

have a thin membrane ensuring a short diffusion path

Question 4

how are the products of digestion absorbed into the bloodstream

Answer 4

through the small intestine