Bone marrow does not occur in

In humans,the knob-like projection of the second cervical vertebra helps in the rotational movement of the head. What is it called?

Cervical vertebrae are located in

The heaviest and largest vertebrae are

The backwardly projecting process of a neural arch in the case of lumbar vertebrae is known as:

The pelvic girdle of birds is attached to a complex structure formed by the fusion of the last thoracic,all lumbar,and the first few caudal vertebrae. This structure is called: