The most superior boundary of the spinal cord is the foramen magnum.
The inferior boundary of the spinal cord typically ends at the level of the L1 or L2 vertebra in most adults.
Medulla Oblongata
conus medullaris
dura pater
most of the neurons in the brain and spinal cord are
The spinal cord is part of the nervous system.
Your brain and spinal cord, for the most part.
The spinal cord is not a bone, it is a collection on nerves connecting the muscles of most of the body to the brain
spinal cord
Your vertebral column protects the spinal cord. Vertebral column is supported by strong ligaments. Most importantly the muscle tone is there, which act on vertebral column, to protect your spinal cord.
Because the spinal cord is a lot of what keeps you alive. It controls all the basic things you need to survive. If you fall and break your spinal cord you will most likely die. It controls thing like breathing and your heart.
The brain and spinal cord are collectively called the Central Nervous Sytem which controls all most of the body's functions including movement.