Which cell forms the myelin sheath of myelinated nerve fibers in the peripheral nervous system? A: Astrocytes B: Microglia C: Oligodendrocytes D: Schwann cells

In the central nervous system, myelin forming cells with myelinated nerve fibers are A: astrocyte B: oligodendrocyte C: microglia D: Schwann cell E: satellite cell

【多选题】The factors that influence the AP conduction velocity on nerve fiber include A. thickness of the myelin shealth. B. myelinated or not C. diameter of the fiber D. temperature E. strength of the stimulation

The reason for rapid conduction of impulses along myelinated nerve fibers is that they have( ) A: long axons B: thick axons C: many synaptic vesicles in the axons D: clefts of Schmidt and Lantermann E: nodes of Ranvie

In myelinated nerve fibers nerve impulses() A: occurs along the entire axolemma B: jump from node to node C: jump from internode to internode D: occurs along the Schwan cells E: occurs along the oligodendrocytes