Name the entire region that extends from A to C. 

What is the name of the gel-like substance at “C”?

What sulcus is indicated by arrow “A”?

Name the “lines” represented by letter “D”.

The region at “A” is slightly wider than the rest of the spinal cord. This is called the ______________________________.

Identify the fossa labeled ” A “

  Considering the macroscopic anatomy of a long bone, name the region labeled A.

Identify the layer indicated by arrow D

Identify the bone labeled ” A “

Identify the structure/layer labeled “B” on the model above.