isotonic


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isotonic

 [i″so-ton´ik]
1. of equal tension.
2. denoting a solution in which body cells can be bathed without net flow of water across the semipermeable cell membrane; also, denoting a solution having the same tonicity as another solution with which it is compared.

i·so·ton·ic

(ī'sō-ton'ik),
1. Relating to isotonicity or isotonia.
2. Having equal tension; denoting solutions possessing the same osmotic pressure; more specifically, limited to solutions in which cells neither swell nor shrink. Thus, a solution that is isosmotic with intracellular fluid will not be isotonic if it includes solute, such as urea, that freely permeates cell membranes.
3. In physiology, denoting the condition when a contracting muscle shortens against a constant load, as when lifting a weight. Compare: auxotonic, isometric (2).

isotonic

(ī′sə-tŏn′ĭk)
adj.
1. Of equal tension.
2. Isosmotic.
3. Having the same concentration of solutes as the blood: an isotonic saline solution.
4. Physiology Of or involving muscular contraction in which the muscle remains under relatively constant tension while its length changes.

i′so·ton′i·cal·ly adv.
i′so·to·nic′i·ty (-tə-nĭs′ĭ-tē) n.

isotonic

Physiology
adjective Referring to uniformity of osmotic pressure.
 
Sports medicine
adjective Referring to a uniform muscle tone.
 
noun Isotonic drink, see there.

isotonic

adjective
1. Referring to a uniform muscle tone.
2. Referring to uniformity of osmotic pressure noun Isotonic drink, see there.

i·so·ton·ic

(ī'sō-ton'ik)
1. Relating to isotonicity or isotonia.
2. Having equal tension; denoting solutions possessing the same osmotic pressure; more specifically, limited to solutions in which cells neither swell nor shrink. Thus, a solution that is isosmotic with intracellular fluid will not be isotonic if it includes solute, such as urea, which freely permeates cell membranes.
3. physiology Denoting the condition when a contracting muscle shortens against a constant load, as when lifting a weight.
Compare: auxotonic, isometric (2)

isotonic

Of a fluid that exerts the same OSMOTIC PRESSURE as another, especially as that of the body fluids. Body cells, such as red blood cells, can be immersed in an isotonic solution without being caused to change shape. ‘Normal’ saline is isotonic with blood.

isotonic

(of a liquid) having a fluid state with the same WATER POTENTIAL as another liquid. See HYPOTONIC and Fig. 193 .

i·so·ton·ic

(ī'sō-ton'ik)
1. Relating to isotonicity or isotonia.
2. Having equal tension; denoting solutions possessing the same osmotic pressure.
3. In physiology, denoting the condition when a contracting muscle shortens against a constant load.
References in periodicals archive ?
The patient's clinical presentation was consistent with a UTI, determined to be nosocomial, associated with the use of a contaminated isotonic solution.
This study indicates that isotonic handgrip exercise performed for 20 min at an intensity of 30% MVC at a compression cycle of 12 contractions/min cannot cause PEH in the postexercise period.
After the board is returned to a normal isotonic state, the instructor facilitates the next fluid imbalance.
For example, when selecting path for flow from node S to node D, if distance vector routing protocol based on isotonic routing metric is used, for any intermediate node A, it receives routing requests (RREQs) from its neighbors and selects the minimum metric subpath from S to A as the best subpath, as isotonicity ensures that the best path from S to D includes this best subpath; then node A broadcasts one routing request (RREQ) including this best subpath to its one-hop neighbors.
This fact results in the disproportion between the isotonic volume of cells ([V.sub.iso]) and the surface area of cells ([A.sub.c]).
However, it has been reported that even the infusion of isotonic fluid does not eliminate the risk of hyponatremia.
Hypotonic versus isotonic maintenance fluids in critically ill children: a multicenter prospective randomized study.
To our knowledge effect of isotonic eccentric quadriceps exercises on patellofemoral pain syndrome has not been studied though a relationship has been seen between the PFPS and eccentric quadriceps contraction.
COOLING DOWN: Isotonic drinks are designed to quickly replace fluids
Pocari Sweat: It is an isotonic sports drink and a 500ml bottle contains 130 calories and 34g of sugar.
Furthermore laterality will be significantly greater in dynamic movements compared to isometric, isotonic and isokinetic tasks and will be significantly greater at higher loads compared to lower loads.