how is the neurone adapted to carry out its functions

Amantle Duta

There is an image here
http://www.s-cool.co.uk/a-level/biology/nervous-and-hormonal-control/rev...
We can put neurones into three groups on the basis of what they do:
1 sensory neurones Carries impulses from receptors to the CNS.
2 motor neurones Carries impulses from the CNS to the effector.
3 relay neurones Co-ordinate the response. Are link neurones in the CNS.
Sensory neurons have longer dendrites & shorter axons.they carry impulses from sensory organs to spinal cord/brain.
motor neurons have longer axons & shorter dendrites.they carry impulses from spinal cord/brain to the effector organs.
Receptors are cells that detect stimuli - for example, heat, pressure, light.
Sensory neurones bring impulses from receptors to the central nervous system (CNS). These are very long cells as they have to carry the impulse from the body to the place where the response is managed.
From there, the impulse may pass on to a motor neurone to be taken to a muscle or gland (the effector).
Sometimes there is an intermediate neurone (also known as a 'relay' neurone) within the CNS linking the sensory neurone with the motor neurone.

Tabitha Farrant

thanks a lot guys

Amantle Duta

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