Question

When doing experiments with animal tissues they are usually bathed in Ringer's solution, which has a concentration similar to that of blood or tissue fluid. Why do you think this is necessary?

Answer 1

Resposta:

It is essential when doing tests with animal tissues they are more often than not washed in Ringer’s solution, which features a concentration comparable to that of blood or tissue fluid. Ringer’s solution is an aqueous solution of the chlorides of sodium, potassium, and calcium that is isotonic to animal tissue and is utilized topically as a physiological saline and, in tests, to bathe animal tissues. [After Sydney Ringer (1835-1910), British physician.] Ringer’s solution, one of the primary laboratory solutions of salts in water shown to prolong significantly the survival time of extracted tissue; it was introduced by the physiologist Sidney Ringer in 1882 for the frog heart. The solution contains sodium chloride, potassium chloride, calcium chloride, and sodium bicarbonate within the concentrations in which they occur in body liquids. In case sodium lactate is utilized rather than sodium bicarbonate, the mixture is called lactated Ringer’s solution. This solution, given intravenously, is used to rapidly restore circulating blood volume in victims of burns and trauma. It is also used during surgery and in people with a wide variety of medical conditions. Mammalian Ringer’s solution (Locke’s, or Ringer-Locke’s, solution) differs in that it contains glucose and more sodium chloride than the original solution

Explicação: