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nerve systems - Coggle Diagram
nerve systems
blood brain barrier
active transport
pump chemicals
resting potential
polarisation
Na+ / K+
Na+ close
K+ partially close
sodium potassium pump
maintain electrical gradient
pull sodium ions in
negative inside - positive outside
action potential
hyperpolarisation
increase neg charge
depolarisation
decrease to 0
threshold
massive depolarisation
propagation
myelin sheath
saltatory conduction
jumping
restoring pump
all-or-none
refractory
absolute
NO action potential
relative
stronger stimulus - AP
information
afferent neuron
admitting
efferent neuron
exiting
interneurons
intirnsic
cells
neurons
motor
sensory
components
dendirtes
bringing info
soma/cell body
metabolic work
axon
transmit nerve impulses
presynaptic terminals
communicate
nodes of ranvier
glia
astrocytes
synchronise axon activity
microglia
remove wastes
oligodendrocytes
CNS
radial
guide neuron migration
schwann cells
PNS