Classical View of Regulation

Nervous System

• Rapid transient response

• Short distance between effector and target cell

• Action potential leads to release of chemical signalling substance

Endocrine System

• Slow long-lasting effects

• Long distance between effector and target cell

• Other stimuli lead to release of chemical signalling substance

But...

…in reality there is a continuum in the

transition between nervous and endocrine

systems

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