“d” is the

“7” is pointing to the  

  This curvature contains how many vertebrae?

“c” is pointing to the structure on this vertebra called the

“a” is pointing to this structure with all the holes referred to as the

  This curvature contains how many vertebra?

  “7” is pointing to the 

  This bone is the

The structure indicated in Question 1 above is located on the ____________bone.

  The double curved bone pictured above is the