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irritability
physiology
Also known as: excitation
Learn about this topic in these articles:
nerves and nervous systems
- In nervous system: Stimulus-response coordination
…of the cell fluid called irritability. In simple organisms, such as algae, protozoans, and fungi, a response in which the organism moves toward or away from the stimulus is called taxis. In larger and more complicated organisms—those in which response involves the synchronization and integration of events in different parts…
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