The brain and spinal cord are referred to collectively as the Central Nervous System. Please watch the following two videos on the brain and the cells which compose the brain. They are dense, brief overviews of the most important features of the brain and brain cells. You do not have to memorize all of the materials in the videos; watch, learn, and take notes.
Basic Parts of the Brain: https://www.youtube.com/watch?v=kMKc8nfPATI
The Neuron: https://www.youtube.com/watch?v=HZh0A-lWSmY
When you have finished watching the above two videos, post your notes in your journal and provide a brief statement (with no minimum word count) about materials in the videos that you found especially interesting.