“…According to their behaviour in response to acetylcholine (ACh) or occasionally some other agents, muscles were divided into 'tonic' or 'non-tonic' groups (Riesser & Richter, 1925;Sommerkamp, 1928;Wachholder & von Ledebur, 1930;and others). Slow maintained shortening with injection or application of drugs was the criterion of the 'tonic' property.…”
“…According to their behaviour in response to acetylcholine (ACh) or occasionally some other agents, muscles were divided into 'tonic' or 'non-tonic' groups (Riesser & Richter, 1925;Sommerkamp, 1928;Wachholder & von Ledebur, 1930;and others). Slow maintained shortening with injection or application of drugs was the criterion of the 'tonic' property.…”
“…Piotrowski, 1893;Straub, 1900; Franke, 1925;Riesser and Richter, 1925].) After a few minutes the isometric tension gradually diminishes to a small final value, which is maintained for a longer time.…”
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