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
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
举一反三
- Oligodendrocytes make myelin, a fatty substance that insulates nerve axons and speeds the conduction of impulses along nerve fibers.
- 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
- Which cell forms the myelin sheath of myelinated nerve fibers in the peripheral nervous system? A: Astrocytes B: Microglia C: Oligodendrocytes D: Schwann cells
- Through which of the following structure does nerve fibers conduct nerve impulses? A: Myelin sheath B: Axolemma C: Neurofilament D: Synaptic vesicle
- In central nerve fibers, the sheath cell is() A: Astrocytes B: Oligodendrocytes C: Satellite cells D: Ependymal cells E: Schwann cells