What are Thermoreceptors


The receptors which respond to temperature changes are called thermoreceptors. Some invertebrates can directly sense alternations in environmental temperatures. For example:

  1. Paramecium collects in areas where temperature and water is moderate.

  2. Leeches and ticks have a heat-sensing mechanism. They detect the warm-blooded hosts with this mechanism.

  3. Certain insects, some crustaceans, and the horseshoe can also sense thermal variations. But the structures of specific tactile receptors have not been identified in these animals.

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