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10 Cards in this Set

  • Front
  • Back
Which two types of neurons do the peripheral nervous or PNS system contain?
sensory and moter neurons
Neurons can be classified into three different types; which are these?
sensory, inter, and motor neurons
What is the simplest neural pathway?
reflex arc
What type of the neuron recieves information and always travels toward the cell body?
the Dendrites
Which nerves control skelatal muscle bones and skin?
somatic nerves
Which nerves control internal organs, muscles and glands?
autonomic nerves
A Synapse is...
a space between a neuron's axon and it's target.
What is the term summation mean?
the sum effect of all neurotransmitters acting on an neuron.
What happens in the depolarization phase?
a neuron is stimulated enough to cause Na+ gates to open, and causes an in-rush of Na+
What is meant by the All-or-None Theory?
the neuron either responds fully (threshold was reached) or not at all.