It is hopeful that skull has not become detached from the spine as that person would likely be dead. The joint that attaches the spinal column to the skull is called the atlanto-occiptial joint and creates forward and backward movement (flexion and extension). There are also strong ligaments. They can all be injured and if unstable it is possible to fuse to spine to the skull using plate and screws, operating from the back of the head and neck.
I believe the most recent numbers for the survival of atlanto-occipital dislocation, more commonly referred to as internal decapitation, are 98 out of 100 people die from this particular trauma. There are people who have survived though and there are invasive surgeries to reattach the skull back to the spine after dislocation.
Yes, a full spine and skull.
The spine
nothing
Yes they do - they have a spine that starts at their skull, and ends at the tip of their tail.
A skull, spine and ribs.
Spine.
Yes they do ! They have a complete skeleton including skull, spine and rib-cage.
pretty much all of them. tibia/fibia for your legs, spine for your back, skull for your head, etc.
short answer - the sacrum and the base of the skull.
The appendicular skeleton includes the bones of the extremities.
It's the bone that makes them laugh when you tell them a joke.