What is the name of the structure that connects a bone to a bone called?

What is the name of the bone that #4 is pointing to in this diagram?    

What type of cell would ordinarily be found in site #86osteocyte     

Any point where two bones meet is called a(an) _____________________________.

The thin layer of slighly denser spongy bone that separates an adult’s epiphysis from the diaphysis is called the ____________.

How many curvatures are there in the vertebral column?

What is the letter “E” pointing to in this diagram?  

Which tissue is not found in a long bone?  

What structure would #88 be pointing to in this diagram?   

A growing long bone in a child has only two areas of cartilage at the epiphysis.  These areas are the _______________________.