The Nervous System
Quick check: are you ready for these common exam questions? The nervous system allows humans to react to their surroundings and coordinate their behaviour.
How fast can you answer these reflex arc questions?
What is The Nervous System?
"The nervous system is a complex network of neurones and sensory organs that enables the body to detect stimuli and coordinate fast, electrical responses."
Why are reflex actions important?
Which sequence shows the correct pathway for a reflex arc?
Which sequence shows the correct pathway for a reflex arc?
Reflex Arcs & Synapses
A reflex arc is an automatic, rapid response that bypasses the conscious part of the brain.
Synapses are gaps between neurones where chemical signals diffuse to pass the impulse.
The sequence in a reflex arc is: Receptor -> Sensory Neurone -> Relay Neurone -> Motor Neurone -> Effector.
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