1. Home
  2. Flashcards
  3. Preview

Nervous system

  1. what is involved in continuous propagation
    • non-myelinated neurons
    • slow process
    • AP moves by continous propagation down the axon
    • depolarisation spreads from one adjacent region to the next
  2. what is involved in saltatory propagation
    • myelin limits movement of ions across the membrane 
    • AP jumps from one node of Ranvier to the next
    • fast process
  3. where does the word saltatory comes from
    from saltare latin to leap/jump
  4. what effect does axon diameter + presence of myelin have
    effects propagation speed
  5. what do ions do as they move through the cytoplasm
    they depolarise adjacent portions of plasma membrane
  6. which shows less resistance to ion movement [cytoplasm/ plasma membrane]
    cytoplasm
  7. do larger axons, the depolarisation move along quickier
    yes
  8. what is the most common neurotransmiter
    acetylcholine
  9. what does a excitatory neurotransmitter do
    it causes deploarisation and propagation of ATP
  10. what does inhibitory neurotransmitter do
    causes hyperpolarisation and suppression of AT
Author
Claireg05
ID
363051
Card Set
Nervous system
Description
Updated

  1. Home
  2. Flashcards
  3. Preview