Gray matter contains a glial cells axons of motor

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29. Gray matter contains A.glial cells, axons of motor neurons, and Schwann cells.B.glial cells and myelinated fibers.C.neurosomas, dendrites, and proximal parts of axons of neurons.D.the distal part of axons of lower order motor neurons.E.glial cells only. 30.______ carry motor commands from the brain along the spinal cord.
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31.Second-order neurons synapse with third-order neurons in the 32.__ keep(s) nerve fibers insulated from one another. 33. ___ fibers innervate eyes and ears A. White B. Visceral C. Somatic D. Special E. General 34. A ganglion is a 35.There are __ pairs of spinal nerves.
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36.This figure shows the anatomy of a nerve. What does "3" represent? This figure shows the posterior aspect of spinal nerve roots and plexuses. Answer the Questions 37 and 38 using the diagram below. 37.What does "3" represent? A. cervical plexusB. brachial plexusC. coccygeal plexusD. sacral plexusE. lumbar plexus 38.What does "2" represent?
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39.The ventral rami of the spinal nerves form nerve plexuses in all regions except 40.The cervical plexus gives origin to the ___ nerve(s). 41.Which of the following nerves originates in the lumbosacral plexus? A. AxillaryB. SciaticC. PhrenicD. IlioinguinalE. Obturator 42.Which of these is an ascending tract of the spinal cord?
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