Flashcards in Nerve and muscle degeneration and re-innervation Deck (12):
What would happen if a motor neurone in the PNS was damaged?
It has terminally differentiated
Permanent injury results in cell death
No mitosis = no replacemetn
Describe the nerve fibres found in type 1 muscle
Slow motor fibres (70m/s)
Excitability has low threshold
Describe the nerve fibres found in type 2 muscle
Fast motor fibre (120m/s)
Excitability has a high threshold
What happens in the soma of an axon?
What is the survival of cytoplasm dependent on?
Interaction with the nucleus
What protects peripheral nerves?
How many spinal nerves are there?
How many cranial nerves are there?
What does damage to the cell body result in?
What is a dead neurone replaced with?
What does damage to the axon result in?
Possibility for recovery