of the axon

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  • However, after that time period, end-organ contact plays a role in influencing the reinnervation ability of the axon.
  • Growing axons move through their environment via the growth cone, which is at the tip of the axon.
  • This is due to the light or non-myelination of the axon.
  • It may play a role in the local differentiation of the axon into distinct functional subdomains.
  • End-organ contact can also have a major affect on the reinnervation accuracy of the axon.
  • This insulation, however, has the restriction that no channels can be present on the surface of the axon.
  • Repolarization occurs when the K + channels open and K + moves out of the axon.
  • The axis cylinder, however, is the only part of the axon concerned in the transmission. Cited from Physiology and Hygiene for Secondary Schools, by Francis Marion Walters
  • After an axon has grown and connected with its target cell, the diameter of the axon may increase as much as fivefold.
  • Reasons for this are unclear, but proper function of the axon is restored regardless.
  • The growth of the axon stump to its original target is regeneration.
  • Or, gross changes in the diameter or packing density of the axon might cause the change.
  • The terminal nerve branch size has a lot of influence on the reinnervation pathway of the axon.
  • Finally, the surface of the axon cap is covered with a cap wall composed of several layers of astrocyte-like glial cells.
  • It is also evident that each of the consecutive turns of the spiral increases in size along the length of the axon as the number of turns increase.
  • As expected, the action potential at the end of the axon arrives slightly later than it appears in the soma at the point of stimulation.
  • This can generate impulses conducted in both directions along this axon since no part of the axon is in a refractory state.
  • The initial envelopment of the axon occurs without interruption along the entire extent of the Schwann cell.
  • Mature axon tracts has been demonstrated to experience growth when mechanically stretched at the central portion of the axon cylinder.
  • These microtubules act like tracks, guiding nutrients and molecules from the body of the cell to the ends of the axon and back.
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