Question

a)what do arrows a and b point to? b) which series of vertebrae does this vertebra belong to? this is a vertebra with arrow a pointing to flattened plates that fuse in the median plane which complete the arch posteriorly and arrow b pointing to short bony pillars projecting posteriorly from the vertebral body which form the side of the arch. a)superior articular facet, body b)lumbar a)intervertebral notch, lamina b)thoracic a)intervertebral notch, pedicle b)cervical a)lamina, pedicle b)lumbar

Explanation:

A. The flattened plates that fuse in the median - plane to complete the arch posteriorly are the laminae. The short bony pillars projecting posteriorly from the vertebral body which form the side of the arch are the pedicles.
B. The shape and features described are characteristic of a lumbar vertebra.

Answer:

A. lamina, pedicle
B. lumbar