Interfacial forces and phenomena in physiology : being the Herter lectures in New York in March, 1922 / by Sir William M. Bayliss; with seven diagrams.

  • Bayliss, William Maddock, Sir, 1860-1924.
Date:
[1923]
Catalogue details

Licence: In copyright

Credit: Interfacial forces and phenomena in physiology : being the Herter lectures in New York in March, 1922 / by Sir William M. Bayliss; with seven diagrams. Source: Wellcome Collection.

    189/228 (page 171)
    It is found that all these follow from the results of changes in diastolic filling of the ventricles, that is, from the varying lengths of the muscle fibres at the moment of systole. It is naturally a difficult matter to distinguish the effects due to tension from those due to length, but in certain experiments by Patterson and Starling, these two factors were found independent and the output was a function of the length, not of the tension. Tonus and Posture It is clear that if it is the presence of the hydrogen ions on the fibrils that cause contraction, this state will last until the lactic acid is removed in some way, a process that may be expected to require the supply of energy. A. V. Hill has recently found, indeed, by the aid of exact analysis of the time course of the production of heat, that there is a secondary rise occurring in the relaxation period, but