Nerve nets

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Where can nerve nets be found?
-simple organisms such as Hydra
-the sensory receptors respond to a limited range of stimuli, and the number of effectors is relatively small
Describe the features of a nerve net.?
-contains one type of nerve cell
-nerve cells have short extensions and connect to other nerve cells in a net-like structure, which branches in several different directions
-neurones are unmyelinated, so responses are slow
-the degree of response is dependent on the strength of the stimulus and how many receptors are stimulated
Summarise what a nerve net is.?
-nervous system in Hydra
-sensory receptors in nerve nets respond to a limited range of stimuli
-small number of effectors
-neurones are unmyelinated and joined by short extensions
-responses are slow
-nerve cells branch in several different directions

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Nerve nets

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