Hydration effects on muscle response.
The effect of bathing toad sartorius muscle in hypotonic solutions is studied. The twitch, tetanus force and active stiffness increase as the tonicity decreases from 1.0 R to 0.6 R and then decrease below 0.6 R. Explanation is given in terms of the effect on ATP-ase activity.
D000818:Animals; D001834:Body Water / Q000502:physiology*; D002024:Bufo marinus; D002118:Calcium / Q000494:pharmacology; D004558:Electric Stimulation; D007537:Isometric Contraction; D007552:Isotonic Solutions; D051379:Mice; D009119:Muscle Contraction; D009132:Muscles / Q000187:drug effects / Q000502:physiology*; D009994:Osmolar Concentration; D000077331:Ringer's Solution; D012519:Sarcoplasmic Reticulum / Q000502:physiology
D007552:Isotonic Solutions; D000077331:Ringer's Solution; D002118:Calcium