21.1: Chapter 1
( \newcommand{\kernel}{\mathrm{null}\,}\)
Multiple Choice
1. c
3. c
5. a
7. d
9. b
11. c
13. c
15. a
17. b
19. b
21. d
23. c
Fill in the Blank
1. neurons / glia
3. tracts / nerves
5. subcortical nuclei (or subcortical structures)