(a(i))[4]
Identify the diagram parts labelled A, B, C and D.
(a(ii))[1]
State which part has water absorption as its main function.
(b(i))[2]
This surgery is most likely to affect the digestion of one food substance. State which food substance and explain your answer.
(b(ii))[3]
Suggest how this surgery could help a person to lose weight.