hypertonic - definição. O que é hypertonic. Significado, conceito
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O que (quem) é hypertonic - definição

CHEMICAL QUALITY
Hypotonic; Hypertonic; Hypertonic solution; Hypotonic solution; Isotonicity; Hyptonicity; Hypertonicity; Hyperosmotic; Hypoosmotic; Hypotonicity; Isotonic solutions; Tonacity; Isotonic fluid; Osmotic agent; Hypotonic solutions; Low tonicity

hypertonic         
[?h??p?'t?n?k]
¦ adjective
1. Biology having a higher osmotic pressure than a particular fluid.
2. Physiology of or in a state of abnormally high muscle tone.
Derivatives
hypertonia noun
hypertonicity noun
Tonicity         
·noun The state of healthy tension or partial contraction of muscle fibers while at rest; tone; tonus.
tonicity         
[t?(?)'n?s?ti]
¦ noun
1. muscle tone.
2. Linguistics the pattern of tones or stress in speech.
3. Biology osmotic pressure.

Wikipédia

Tonicity

In chemical biology, tonicity is a measure of the effective osmotic pressure gradient; the water potential of two solutions separated by a partially-permeable cell membrane. Tonicity depends on the relative concentration of selective membrane-impermeable solutes across a cell membrane which determine the direction and extent of osmotic flux. It is commonly used when describing the swelling-versus-shrinking response of cells immersed in an external solution.

Unlike osmotic pressure, tonicity is influenced only by solutes that cannot cross the membrane, as only these exert an effective osmotic pressure. Solutes able to freely cross the membrane do not affect tonicity because they will always equilibrate with equal concentrations on both sides of the membrane without net solvent movement. It is also a factor affecting imbibition.

There are three classifications of tonicity that one solution can have relative to another: hypertonic, hypotonic, and isotonic. A hypotonic solution example is distilled water.

Exemplos do corpo de texto para hypertonic
1. Inhaled hypertonic saline "is an inexpensive, safe, additional therapy in patients with cystic fibrosis," Bye‘s team concluded.
2. Animal research and small human studies have indicated that hypertonic solutions could save more lives and minimize brain damage.
3. It supports previous short–term studies which suggested that hypertonic saline stimulates mucus clearance from the lungs and increases hydration of the airway surface.
4. In the latest incident, the six units of red blood cells were washed in a "hypertonic saline" instead of a "sterile normal saline," the federal documents show.
5. For the study, emergency medical workers are randomly infusing some patients with "hypertonic" solutions containing much higher levels of sodium, with or without a drug called dextran.