The Nervous System

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A synapse is a gap in between firstly the sensory and relay neurone, synapses are managed by the vesicles at the end of a neurone which secrete chemicals that diffuse across the synapse.

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CNS- Central Nervous System

Your central nervous system consists of your brain and spinal cord.

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Sensory Neurone

Sensory neurones carry signals from receptors to the spinal cord and brain.

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A Receptor gets information from-

*your nose

*your eyes

*your skin

*your tongue

*your ears

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Relay Neurone

A relay neurone passes on the signal from the sensory neurone to the motor neurone.

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Motor Neurone

the motor neurone is a nerve cell that specifically controls and stimulates muscles and glands.

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An effector is a muscle or gland. It is the thing that is effected by the stimulus.

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The nervous system allows the body to respond to changes in the body (the stimuli)

The change is detected by receptors in our main organs. These are-

  • Eyes- Light receptors
  • Ears- Sound and orientation receptors
  • Nose and tongue- Chemical receptors
  • Skin- Tempreture and pressure
  • receptors

This process involves

*Neurons are controlled by the brain, unless it's a reflex action, where it is controlled by your body.

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