title: Hydration effects on muscle response.
abstract: 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.
mesh_terms: 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
chemical_list: D007552:Isotonic Solutions; D000077331:Ringer's Solution; D002118:Calcium