Question 4

The figure below shows the human digestive system.

a) Identify the parts labelled A to F                                                                          

b) Mr. Atkinson is 60 years old. He occasionally likes to have egg sandwich with his 14 year old grandson.

i) Describe the stages of digestion which leads to amino acids being absorbed by the villi of Mr. Atkins ileum. State the part of the alimentary canal where each stage takes place.                                                                                                                                  

ii) State two ways by which the ileum is adapted for the process of absorption      

iii) How should Mr. Atkinson’s diet differ from that of his 14 year old grandson   

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