Where will you find blood vessels (vasculature) in an epithelial layer?

Tight junctions between cells in an epithelial sheet result in what effect? 

In the image below, how would you describe the location of the vertebrae (near label E) in comparison to the intestines (label B)?  

Which of the following tissues predominantly forms extra-embryonic tissues?

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If a cell takes several hours to show increased proliferation to an extracellular signal, what kind of change is most likely to have occurred in the cell?

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If the structure labeled (A) in the diagram above did not develop correctly, what may be a

likely outcome in the adult?

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In the image below, how would you describe the location of the tail (label C) in comparison to the intestines (label B)?  

Which of the following is the final process of apoptosis?

Which of the following aspects of human development could be researched using C. elegans  (worm) as a model?

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Which of the following is a function of microfilaments?