Degeneration and Regeneration of the Nervous System Flashcards
1
Q
(PNS) axotomy that causes degeneration of distal axon and terminal is what type
A
wallerian degeneration
2
Q
(PNS) retrograde effects on the cell body after axotomy are
A
chromatolysis
- eccentric nucleus
- dissolution of Nissl bodies (RER)
3
Q
(PNS) what occurs in wallerian degeneration
A
distal process has no sustaining cell body, always dies
4
Q
(PNS) regeneration process is
A
schwann cells form channels for regrowth of axons
5
Q
(PNS) misaligned glial cells in regeneration can lead to:
A
neuroma formation
6
Q
(CNS) transneuronal effects?
A
may be seen in major pathways (unlike in PNS where they are rare)
7
Q
regeneration differences for CNS
A
true regeneration is rare because glial cells proliferate to fill space and block regrowth (scar tissue)
