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Science Chapter 27

Science
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central nervous system
the part of the nervous system consisting of the brain and spinal cord.
peripheral nervous system
the section of the nervous system lying outside the brain and spinal cord.
neutrons
the particles of the nucleus that have no charge.
dendrites
branching extensions of neuron that receives messages from neighboring neurons.
axons
a part of a neuron that carries impulses away from the cell body.
nerves
control of your emotions
synapes
the functional junction between two neurons at which point the impulse is transmitted.
reflex
an automatic instinctive unlearned reaction to a stimulus
reflex arcs
The most basic conduction pathway through the nervous system, connecting a receptor and an effector and consisting of a receptor, a sensory neuron, an integrating center in the central nervous system, a motor neuron, and an effector
sensory neuron
cell that carries environmental mesages toward the spinal cord and brain