| 释义 |
hypertonicity|ˌhaɪpətəˈnɪsɪtɪ|
[f. prec. + -ity.]
The condition of being hypertonic. a. Med. Of muscle or muscular tissue (see hypertonic a. 1); = hypertonia.
1886Brain IX. 231 A condition of extreme functional over-activity of the ganglion cells of the anterior cornua of the cord and medulla, causing hyper-tonicity of the entire muscular system. 1923J. F. H. Dally High Blood Pressure v. 64 Arterial hypertonicity, in larger or smaller areas, is met with in a host of disorders. 1949Jrnl. Neurophysiol. XII. 371 Hypertonicity of muscles with hyperactive deep reflexes or clonus.
b. Physiol. Of a solution (see hypertonic a. 2); the extent to which a solution has higher osmotic pressure than some other.
1896T. L. Stedman 20th Cent. Pract. VII. 284 The hypertonicity of the plasma is easily calculated. 1906Amer. Jrnl. Physiol. XV. 359 When the hypertonicity is slight, the degree of recovery is relatively greater than in the case of the more concentrated solutions. 1963E. Ernst Biophysics Striated Muscle (ed. 2) 131 The next experiments were planned in such a way that the loss of water [from the muscle] due to the hypertonicity of the medium should be balanced by water taken up by the swelling elicited by lactic acid. |