"What is the difference between the CNS and the"
Name _______________________ Portfolio #5 CNS, PNS and ANS Review 1. Identify the parts of the spinal cord below. Posterior A. B. A Meninges: B C. C D D. E E. F. F G. G H. H I. J. Anterio K. r L. L M. K I N. M O. J N P. R Q. P Q R. O 2. Gray matter is found (within? B outside?) the H-shaped outline in the C D pictures to the right. White matter is located _____________ that outline. The gray matter is where the ____________________________ are located, while the white matter contains ____________________________ covered with _________________ sheaths. 3. In some cases (such as during child birth) anesthetics are introduced into the epidural space rather than into the subarachnoid space (as in a spinal tap). Explain why an epidural is likely to exert its effects on nerves with slower and more prolonged action than a spinal tap. 4. Tracts conduct nerve impulses in the (central? peripheral?) nervous system. Functionally, they are comparable to _______________ in the PNS. Tracts are located in (gray horns? white columns?). They appear _________ because they consist of bundles of (myleinated? unmyelinated?) nerve fibers. 5. What is the difference between the CNS and the PNS? 6. In the PNS, there are two major divisions. What are they and what is the difference between them? 7. In the motor division of the PNS, there are two major systems. What is the main difference between them? 8. In the autonomic system there are also two major divisions. How do these divisions function in maintaining homeostasis? 9.