How Many Bones Do Vertebrates Have? Vertebrae are the 33 individual bones that interlock with each other to form the spinal column. The vertebrae are numbered and divided into regions: cervical, thoracic, lumbar, sacrum, and coccyx (Fig. 2). Only the top 24 bones are moveable; the vertebrae of the sacrum and coccyx are fused. Do
What Are The 3 Main Parts Of A Vertebra? The normal anatomy of the spine is usually described by dividing up the spine into three major sections: the cervical, the thoracic, and the lumbar spine. (Below the lumbar spine is a bone called the sacrum, which is part of the pelvis). What are the three
Do Birds Have Lumbar Vertebrae? Do birds have lumbar vertebrae? In birds, the number of vertebrae involved in the synsacrum includes all the lumbar vertebrae, some thoracic vertebrae, and one or more caudal vertebrae. The synsacrum is tightly fused with the hip bones (sometimes called the innominate bones, which includes regions corresponding to the ilium