4. Define gray matter and white matter in the spinal cord and in the brain. Describe what portions of neurons are concentrated in gray matter and white matter and describe what specific neural structures are responsible for the gray and white coloration. 5. Name the major brain regions and specifics about those regions(structure/function/relationships ). Be able to describe the locations and functions of each. You will not be asked about specific nuclei, etc. 6. Identify the 12 pairs of cranial nerves, the type of nerve (motor, sensory, mixed), What effectors are served, if motor. Function of each