Question

in the first set of drop - down boxes, select the first root in the term and the correct definition for that root: ankylosing spondylitis (2 roots)
in the first set of drop - down boxes, select the first root in the term and the correct definition for that root. then, in the second set of drop - down boxes, select the second root in the term and the correct definition for that root.
ankylosing spondylitis
root (click to select)
definition (click to select)
root (click to select)
definition (click to select)

Explanation:

The term "ankylosing spondylitis" has two roots. "Ankyl -" means to fuse or stiffen. "Spondyl -" refers to the vertebrae.

Answer:

First root: ankyl -; Definition: to fuse or stiffen
Second root: spondyl -; Definition: vertebrae