axon tracts

12 examples (0.03 sec)
  • Mature axon tracts has been demonstrated to experience growth when mechanically stretched at the central portion of the axon cylinder.
  • The brain of the early zebrafish presents an ideal environment in which to study the behavior of developing axon tracts.
  • Collagen gel was used to promote the growth of larger stretch-grown axon tracts that were visible to the unaided eye.
  • A proposed mechanism involves the creation of a scaffold made out of interface glia, which growth cones contact during the establishment of axon tracts.
  • Grey matter is distinguished from white matter, in that grey matter contains numerous cell bodies and relatively few myelinated axons, while white matter is composed chiefly of long-range myelinated axon tracts and contains relatively very few cell bodies.
  • Ablation of the interface glia leads to a complete loss of longitudinal pioneer axon tracts.
  • Many neurons migrating along the anterior-posterior axis of the body use existing axon tracts to migrate along; this is called axophilic migration.
  • White matter consists of axon tracts (groups of axons) and commissures (axon tracts that cross the brain's midline).
  • Although studies of the mechanisms of pioneer axons have mostly been in invertebrate models, studies have also begun exploring the role of pioneer axons in the development of large vertebrate axon tracts.
  • The stretch-grown axon tracts were cultured on a biocompatible membrane, which could be directly formed into a cylindrical structure for transplantation, eliminating the need to transfer axons to a scaffold after growth was complete.
  • Staining cross-sections of the cortex to reveal the position of neuronal cell bodies and the intracortical axon tracts allowed neuroanatomists in the early 20th century to produce a detailed description of the laminar structure of the cortex in different species.
  • More examples of neurons examined using the Brainbow technique in transgenic mice are located in the motor nerve innervating ear muscles, axon tracts in the brainstem, and the hippocampal dentate gyrus.