The Croonean Lectures on muscular motion. ... Read before the Royal Society in ... MDCCXLVII. Being a supplement to the Philosophical Transactions / [Browne Langrish].

  • Langrish, Browne, -1759.
Date:
1748
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Licence: Public Domain Mark

Credit: The Croonean Lectures on muscular motion. ... Read before the Royal Society in ... MDCCXLVII. Being a supplement to the Philosophical Transactions / [Browne Langrish]. Source: Wellcome Collection.

    72/80 (page 60)
    Syfioles and cDiaJloles analogous to the Heart and its Auricles, I think we have good Reafon to con¬ clude, that the fame Principles which contract and dilate the voluntary Mufcles, in the above-mention'd Condition, are the Principles which occafion the Syfiole and cDiajlole of the Heart, with this Dif¬ ference only, that the Influx of the Blood into the Sinufes of the Heart, is what no other Mufcle in the Body has or receives 5 and without Doubt this may truly be reckon'd the greatefl: Afllftant in di¬ lating the Ventricles of the Heart, after the attract¬ ive Influence of the nervous c_/Ether ceafes, and the c/^Equilibrium is reftored between the ftretched- out Fibres and thofe which were contracted. CXXXVIIL What has been faid feems greatly to evince the Truth of our third and lajl Suppofition; viz. that the ‘Diaftole of the Heart may depend on an Abate¬ ment of Tendon in the contracted Fibres, a Vis Re- Jlitutionis in fuch as are over-ftretched, and the In¬ flux of the Blood conjunctly. CXXXIX. Give me Leave to relate two or three Experi¬ ments which I have made, in order to illuftrate the foregoing Theory, and then I fhall conclude. CLX