Isotonic meaning

ī'sə-tŏn'ĭk
Isotonic is defined as having equal tension.

When you lift an object at a constant speed and your muscle's length changes but the tension stays the same, this is an example of isotonic contractions.

When a fluid has the same osmotic pressure as the fluid inside your red blood cell, this is an example of an isotonic fluid.

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Of equal tension.
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Isosmotic.
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Having the same concentration of solutes as the blood.

An isotonic saline solution.

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Of or involving muscular contraction in which the muscle remains under relatively constant tension while its length changes.
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Having equal tension.
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Having the same osmotic pressure; esp., designating or of a salt solution having the same osmotic pressure as blood.
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Of equal tension.
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Isosmotic.
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Having the same concentration of solutes as the blood.

An isotonic saline solution.

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Relating to or involving muscular contraction in which the muscle remains under relatively constant tension while its length changes.
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(of two solutions) Having the same osmotic pressure.
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(of a medical solution) Having the same concentration of solutes as human blood.

Use an isotonic saline solution in your neti pot to prevent irritation of your nasal passages.

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(of two muscles) Having equal tension.
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(physiology) Of or involving muscular contraction against resistance in which the length of the muscle changes. Antonym is isometric. Isotonic movements are either concentric (working muscle shortens) or eccentric (working muscle lengthens). See also Isotonic (exercise physiology)
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Origin of isotonic

iso– Greek tonos tension tone –ic