Structure of a Motor & Sensory Neuron
Motor Neurons
Sensory Neurons
Carry impulses from the central nervous system to the effector
Carry impulses from the sensory receptors to the central nervous system
What is a neuron?
A neuron is a specialized cell that transmits nerve impulses
Characteristics:
Structural Classification
Structural Classification
- extreme longevity
- conducts messages
- amitotic
- high metabolic rate
Bipolar neurons: one axon & one dendrite; rare in adults; special sense organs
Multipolar neurons: many extensions from the cell body
unipolar neurons: have a short, single process leaving the cell body
All neurons have:
cell bodies: nucleus and metabolic center of the cell
Processes: fibers that extend from the cell body
Structure of a motor and sensory neuron
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Created on January 12, 2021
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Transcript
Structure of a Motor & Sensory Neuron
Motor Neurons
Sensory Neurons
Carry impulses from the central nervous system to the effector
Carry impulses from the sensory receptors to the central nervous system
What is a neuron?
A neuron is a specialized cell that transmits nerve impulses
Characteristics:
Structural Classification
Structural Classification
Bipolar neurons: one axon & one dendrite; rare in adults; special sense organs
Multipolar neurons: many extensions from the cell body
unipolar neurons: have a short, single process leaving the cell body
All neurons have:
cell bodies: nucleus and metabolic center of the cell
Processes: fibers that extend from the cell body