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14 Cards in this Set

  • Front
  • Back

neuron

basic unit of the nervous system; transmits electrical signals

nerve

a bundle of neurons

cell body

the part of a neuron that contains the nucleus and other organelles

the part of a neuron that contains the nucleus and other organelles

dendrites

projections connected to the cell body of a neuron; receive signals

projections connected to the cell body of a neuron; receive signals

axon

the "tail" of a neuron that is responsible for transmitting electrical signals away from the cell body

the "tail" of a neuron that is responsible for transmitting electrical signals away from the cell body

myelin

a fatty covering on the axon of a neuron that speeds up the electrical signal

a fatty covering on the axon of a neuron that speeds up the electrical signal

motor neuron

carries information from the CNS to the body

sensory neuron

carries information from the body to the CNS

interneuron

connects motor and sensory neurons

synapse

the space between the axon terminal of one neuron and the dendrites of another

action potential

high speed signals that travel along the axons of neurons

CNS

central nervous system; consists of the brain and spinal cord

PNS

peripheral nervous system; consists of the peripheral (spinal) nerves

neurotransmitter

the chemical signal passed from the axon of one neuron to the dendrite of another neuron

the chemical signal passed from the axon of one neuron to the dendrite of another neuron