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Secretin and cholecystokinin are produced and secreted by cells in the lining of the alimentary tract.  Which of the following statements about these 2 substances is true?

What vitamin is stored in Ito cells?

   Refer to the image above.  Which of the following is TRUE?

Name the structure that produces bicarbonate in the duodenum.

True or false.  White pulp is loaded with macrophages and Langerhan’s cells.

Parietal cells are a key cell type in the stomach.  Describe in detail what they do.  Make sure to include a description of the apical and basolateral surfaces of the cell and what moves in those areas.  

What cell type comprises the myenteric plexus?

   1. Name the disease.[a] 2. True or false. This disease is commonly caused by the common cold. [b]

Which of the following is a part of the upper respiratory tract?

Refer to the image above. 1. Name the location of this tissue.[a] 2. Name the special feature at the end of “B.”[b]