Identify the layer of the organ indicated by arrow “B”.

      What is the specific function of the cell clusters at letter C?

Identify the layer of the organ indicated by arrow “C”.

  Name structures circled and labeled “A”.

Identify the REGION of the organ indicated by “A”.

List one body structure that the embryonic germ layer at “B” (green) gives rise to.  

Identify the space indicated by arrow “D”.

Identify the specific tubular structures at letter B.

Name the cells indicated by “A” 

Identify the tissue structure indicated by arrow “A”