1. The cell bodies of CNS neurons are concentrated in tissue called_______________, found at the center of the spinal cord and on the surface of thecerebrum, among other places.

2. The CNS is covered by three fibrous membranes called the _______________ .

3. Somatosensory perception is localized in a fold of cerebralcortex called the _______________ .

4. Many substances in the blood are unable to get into the braintissue because of the _______________ around the blood vessels of the brain.

5. Sensory signals to the spinal cord enter it by way of its _______________ .

6. Cerebrospinal fluid is produced by a network of blood capillariescalled a _______________ in each ventricle of the brain.

7. Above segment T6, the dorsal column of the spinal cord iscomposed almost entirely of two ascending tracts of white matter, the fasciculus _______________ and fasciculus _______________ .

8. _______________ is the crossing of nerve fibers from one side of the CNS tothe other as the ascend or descend the brain or spinal cord.

9. The largest part of the diencephalon is the _______________ , the"gateway to the cerebral cortex."

10. Most commissural tracts of the cerebrum pass between the rightand left hemispheres through a C-shaped bundle called the _______________ .

11. The _______________ lobe of the cerebrum is concerned mainly with vision.

12. The _______________ , concerned with motor control, are masses of gray matterunder the cerebral white matter lateral to the thalamus.

13. Many emotional responses and perceptions of reward andpunishment reside in the _______________ , a ring of structures on the medial border of the temporallobe.

14. When you engage in intellectual activity such as taking an exam,your electroencephalo-gram is dominated by _______________ waves.

15. Each of the brain's areas of primary sensory cortex issurrounded by a/an _______________ where newsensory information is related to previous experience and thus interpreted or identified.

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