left
Brain and spinal cord....
dura pater
The spinal column is a bony encasement made of movable discs, which protect the spinal cord but allow for movement. If the spine is bent too sharply the spinal column or spinal cord can be injured. http://www.brainandspinalcord.org/spinal-cord-injuries/index.html
Herophilus coined the term "spinal cord" around 200 BC. Galen more formally documented the spinal structures through anatomical studies in the second century A.D.
The Brainstem is the lower extension of the brain where it connects to the spinal cord.
The foramen magnum is where the spinal cord enters the cranial cavity.foramen magnum
your head of course.
Nervous (Nerves) System. It controls, well, all the other anatomical systems. Neurological, if you will.
Tethered Spinal Cord is a condition where the spinal cord is attached to the spinal column and that causes the cord to become stretched.
The position of the worms nerve cord compare with your nerve cord is it placement along the ventral surface of the body. Our spinal cord is protected by vertebra were the worms is unprotected.
That is by convention you put it into central nervous system. Tomorrow you can put the brain only in central nervous system and the spinal cord in the peripheral nervous system. This is anatomical classification. Physiologically the nervous system is single unit.
spinal cord