Neuron Communication Flashcards
Neuron structure
soma, dendrite, axon
Sensory Neurons
bring information to the central nervous system
Motor Neurons
send signal from the brain and spinal for to muscles
Gray(1731)
proposed electricity = NS messenger
Galvani(1791)
static electricity causes dissected front leg twitching
Helmholtz(1845)
reflex time not instant; contraction = biological and electrical activity
Neuron Communication Order
Dendrite, cell body, axon, and terminals
electrical charges
action potential = information transmission; requires electrical charge
spatial summation
additional of one graded potential to another, when the potentials occur close in space
temporal summation
addition of graded potential to each other, when the potentials occur close in time
synapse
spatial junction between one neuron and another; forms the information transfer site between neurons
synthesis
some neurotransmitters are transported while others are packaged
release
exocytosis (needs depolarization); fusing with membrane
receptor
binding to a receptor, the binding will cause a change in a receptor to open an ion channel
inactivation
broken down and recycled or turned off
