The spine (aka backbone) is a linked column of bones running from the head down ... There are 5 lumbar vertebrae in the lumbar region. There are 5 sacral vertebrae, which are fused as one bone and ...

The cranio-vertebral joint is thus really a joint between two vertebrae. One or more times during vertebrate evolution, one vertebra at the cranio-vertebral boundary became reduced in size and became ...

For the first time in five and a half years, Emily Farmer literally has her head on straight. The 33-year-old Rigby woman is ...

The spine is an articulation of vertebrae with one another connected ... the fusion requires time to heal and to grow together as a fused segment prior to allowing movement to occur.

Some acrodont teeth and plates of fused teeth are never replaced. Whether the teeth are the same or different in shape Homodont - Teeth are all about the same shape (most vertebrates, few mammals).

Patients will often present at a young age with a family complaint of a curvature to the spine. Radiographs may demonstrate abnormal vertebrae that are either fused or partially formed.