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The diagram below is a cross section of a portion of alimentary canal. a) i) Which part of the alimentary canal is represented by the portion...

      

The diagram below is a cross section of a portion of alimentary canal.
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a) i) Which part of the alimentary canal is represented by the portion above.
ii) Give a reason for your answer in (a) (i) above.
b) i) State two functions of the part of alimentary canal represented above.
ii) Explain two structural adaptations of the part of alimentary canal represented above.

  

Answers


sharon
a) i) Small intestines/ileum;
ii) Presence of finger like projections (Villi)
b) i) Absorption of products of digestion (example glucose, vitamins)
Its walls secret mucus that lubricates the chime;
ii)- Has smooth muscles; that relax and contract to aid in peristalsis;
- Has goblet cells; that secret mucin to prevent autodigestion;
-Has lacteal; for absorption of fatty acids and glycerols.
-Vascularises; to enhance a steep concentration gradient for rapid absorption of digested materials.
sharon kalunda answered the question on May 27, 2019 at 09:44


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