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| an innate mechanism of the body that regulates its rhythmic and periodic cycles |
| to stimulate to functional activity |
| tonicity (təʊˈnɪsɪtɪ) | |
| —n | |
| 1. | the state, condition, or quality of being tonic |
| 2. | physiol another name for tonus |
tonicity to·nic·i·ty (tō-nĭs'ĭ-tē)
n.
Normal firmness or functional readiness in body tissues or organs.
The sustained partial contraction of resting or relaxed muscles.
The osmotic pressure or tension of a solution, usually relative to that of blood.