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The nervous system - Coggle Diagram
The nervous system
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Key words:
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Sensory receptors
Receptors in skin detect pressure(touch), temperature change, tissue damage(causes you to feel pain)
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Reflex arc
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Sensory neurones send electrical impulses to relay neurones, which are located in the spinal cord. They connect sensory neurones to motor neurones.
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Synapses
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Diffusion not as fast as movement of electrical impulse, but makes it possible for the impulse to cross gap
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Neurones
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Structure:
Some axons are surrounded by a myelin sheath which is a fatty layer which acts as an electrical insulator, speeding up the electrical impulses.
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Receptors
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Receptor cells are similiar to most animal cells but tend to be clustered together in special sense organs
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