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Spring Quiz 1

Masterbooks Intro to A&P Volume 3

sensory functions a vast number of sensory receptors throughout the body provide input to the nervous system
motor output simply what the body is told to do as a result of all this information input and processing
central nervous system composed of the brain and the spinal cord
the brain the master control center of the nervous system
peripheral nervous system portion of the nervous system outside of the central nervous system
sensory division carries information from the skin and muscles as well as from the major organs in the body to the central nervous system
afferent division another name for sensory division, and meaning "bringing toward" because it carries nerve impulses "to" or "toward the CNS
motor division carries instructions from the CNS out to the body
somatic nervous system instructions that are carried by the motor division and taken to muscles that we can consciously control
autonomic nervous system the part of the motor division that controls the involuntary functions
neurons the excitable nerve cells that transmit electric signals
stimulus excites a neuron, triggering an electrical signal called an action potential
neuroglia cells in nervous tissue that help protect and support the neurons
neurotransmitters the chemicals that transmit an electrical impulse from one neuron to the next
dendrites parts of neurons that receive inputs, and when received, an electrical signal is generated and transmitted toward the cell body
axon terminals where neurotransmitters are released to carry the neuron's signal on to the next cell in line
multipolar neurons most common type; have one axon and multiple dendrites
bipolar neurons have only two processes: one axon and one dendrite
unipolar neurons have a more unusual configuration with only one process extending from the cell body
interneurons means "between neurons"; carries impulses from one neuron to another within the central nervous system