Nervous System part 2Study Questions1. Name the 3 DCT that surround nerves starting with most superficial to deep.2. ___________________ are cells that myelinate nerves in the PNS.3. ___________________ are cells that myelinate nerves in the CNS.4. ___________________ is a protein & lipid sheath that protects, insulates, & increases the speedof transmission of nerve impulses.5. ____________________ are the spaces or gaps along a nerve that lack Schwann cells.6. What is the main function of Schwann cells and oligodendrocytes?7. ____________________ supporting cells of nervous system that protect neuron processes & cellbodies.8. Name 2 types of glial cells found in PNS.9. Name 4 types of glial cells found in CNS.10. ______________ matter consists of long myelinated processes (such as axons of motorneurons).11. _______________ matter consists of un-myelinated cell bodies, short processes, & smallneurons.12. White matter of PNS = __________________ & CNS = ____________________.13. Gray matter of PNS = ___________________ & CNS = ____________________.14. _______________________ are the functional equivalent of Schwann cells.15. How do Schwann cells and oligodendrocytes differ?16. _________________________ form the blood brain barrier and help to screen out toxins fromCNS.17. Small phagocytic cells that protect nervous system from debris, viruses, bacteria, can becytotoxic?18. Ciliated neuroglia that help to circulate cerebral-spinal fluid?1Answers1. epineurium, perineurium, endoneurium2. Schwann3. Oligodendrocytes4. Myelin5. Nodes of Ranvier6. speed up transmission of nervous signals to their effectors7. neuroglia or glial cells8. satellite cells, Schwann cells9. oligodendrocytes, astrocytes, microglia, ependymal cells10. White11. Gray12. nerves | tracts13. ganglia (example: Dorsal Root Ganglion) | cortex in brain or horns/commissure in spinal cord14. Oligodendrocytes15. Takes multiple Schwann cells to myelinate 1 nerve, 1 oligodendrocytes helps to myelinate multiple nerves (*although multiple oligodendrocytes are still used to myelinate 1 nerve…see text for photo)16. Astrocytes17. Microglia18. Ependymal
View Full Document
Unlocking...