BBC2 年
The structure of the digestive system
In the small intestine there are also specialised structures called villi which have a tiny hair-like structure poking into the small intestine to absorb digested food. If we stretched out all the ...
BBC3 年
The structure of the digestive system
In the small intestine there are also specialised structures called villi which have a tiny hair-like structure poking into the small intestine to absorb digested food. If we stretched out all the ...