These days I am watching documentaries about the nervous system.
It helps me a lot to see this type of visual documentary since I learn how our organism works.
In the central nervous system, both the brain and the spinal cord are essential to transmit information in our body. There can be voluntary or involuntary acts as a response to this information.
The involuntary acts don’t depend on us and information is transmitted through the spinal cord, for example: breathing.
However, for voluntary acts, the brain is needed, for example: running.
These documentaries help me understand and I like them very much.