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The CNS is where all the information from the sense organ is sent and

The CNS consists of ... only

Neurones are

Neurones transmit the information as

Instructions from the CNS are sent to the effectors (muscles and glands) which

Effectors are

Muscles contract in response to a

Sensory Neurones: Nerve cells that carry signals from receptors to the

Relay neurones: Carry signals from sensory neurones to

Motor neurones: Nerve cells carry signals from the CNS to