Neurophysiology Flashcards
A chain of neurons is referred to as a _______ whereas a bundle of axons is a _____.
pathway; tract
What are 5 functions of astrocytes?
- support cells
- ion homeostasis
- transmitter uptake
- modulation of synaptic activity
- blood brain barrier
In humans, we have ~ __-__ glial cells per neutron.
4-5
__________ are in the CNS and one ________ can ensheath multiple axons.
oligodendroglia; oligodendrocyte
One _______ cell can ensheath only one axon.
schwann
AP’s are a _______ system.
binary
AP’s are a result of ______ movements.
ion
Excitable membranes have ________ permeability.
selective
APs are a _______ feedback cycle.
positive
________ current = the shuttling of charge along a neuronal process.
passive
_______ current = the movement of ions through ion channels.
active
The velocity of an AP is determined by both _____ and _____ current.
active; passive
_______ = difficulty of moving ions.
resistance
What is resistance measured in?
Ohm
A ________ separates and accumulates charges.
capacitor
