The cervical spine, or the neck.
I don't understand ur question . But thoracic cavity is in the thorax. That means in the chest. There is the lung, heart and oesophagus. And pelvic cavity is in the pelvis. U get the uterus there and...
Yes. The cranial and the spinal or vertebral cavity are both part of the dorsal cavity.
The diaphragm separates the chest from the abdomen and pelvis
diaphragm