Stimulus (physiology)

In physiology, a stimulus is a detectable change in the internal or external environment.

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When a stimulus is applied to a sensory receptor, it elicits or influences a reflex via stimulus transduction.

Related Topics:
Sensory receptor - Reflex - Stimulus transduction

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A stimulus is often the first component of a homeostatic control system.

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When a sensory nerve and a motor nerve communicate with each other, it is called a nerve stimulus.

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