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How can neurons be classified?
According to their structure and function
What are the three structural classifications of neurons?
Multipolar
Bipolar
Unipolar
Where are multipolar neurons found?
CNS and PNS
Most common neuron

What is the structural feature of multipolar neurons?
One axon and many dendrites
Where are bipolar neurons found?
Rare
Special sense organs

What is the structural feature of bipolar neurons?
One dendrite and one axon with the cell body in between
Where are unipolar neurons found?
PNS

What is the structural feature of unipolar neurons?
Single process that splits into peripheral and central processes
What do the receptive endings of unipolar neurons do?
Receive sensory input
What do sensory neurons do?
Conduct sensory input from receptors to the CNS

What structural type are sensory neurons?
Unipolar
What do interneurons do?
Conduct information within the CNS

What structural type are interneurons?
Multipolar
What do motor neurons do?
Conduct motor output away from the CNS to a muscle or gland
What structural type are motor neurons?
Multipolar
What do lower motor neurons conduct?
Somatic motor output

What do preganglionic and postganglionic neurons conduct?
Autonomic motor output

What function do neurons perform?
Neural communication
What does neuron structure allow them to do?
Detect stimuli
Generate electrical signals
Conduct sensory input and motor output
What electrical signals do neurons generate?
Graded potentials
Action potentials
What does sensory input travel through to reach the CNS?
Sensory neurons in nerves
What does motor output travel through to reach muscles or glands?
Motor neurons in nerves
What types of information can neurons conduct?
Sensory input to the CNS
Sensory input within the CNS
Motor output within the CNS
Motor output from the CNS to an effector
What is the pathway of sensory input?
Sensory receptor → Sensory neurons → CNS
What is the pathway of motor output?
CNS → Motor neurons → Muscle or gland