A mechanical essay upon the heart, in three anatomical lectures. Wherein I. The heart is demonstrated to be a compleat epitome of myology ... II. The origin and nature of the blood ... III. The praeternatural state of that fluid / By William Wood.

  • Wood, William, 1688-
Date:
1729
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Licence: Public Domain Mark

Credit: A mechanical essay upon the heart, in three anatomical lectures. Wherein I. The heart is demonstrated to be a compleat epitome of myology ... II. The origin and nature of the blood ... III. The praeternatural state of that fluid / By William Wood. Source: Wellcome Collection.

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    Ventricle, and afterward infinuate themfelves through the whole Subftance of the Heart to invigorate it with animal Spirits. THE Heart is circumfcrib’d by a very fine Membrane, _ which adheres fo firmly to its mufcular Fibres, that it is very difficult to feparate them. Immediately underneath this, lies a fatty Subftance, but more particularly upon the Balls at the Exit and Entrance of the four great Blood-Veflels. This Fat is of wondrous Ule to lubricate, and confequently to facilitate their Motion in the various Syftoles and 'Diajloles of the Heart. f • * V t •**<?' • * ^ If -» , x * | 1 ' • • , » IN the Bafis of the Heart lie leveral Tendons, which fur. round the left Ventricle, and the Aorta. The Entry of the right Ventricle is likewife tendinous, but the Fibres which ter¬ minate about the Pulmonary Artery, terminate flefhy. Theie tendinous Ringlets, like fo many Ferrels, not only ferve to fortify thefe great Veflels at their Union with the Bafis of the Heart, but are of infinite Ufe and Contrivance for the Rife and Infertion of all the Fibres which compofe the Heart. Thefe Tendons, like Cartilages in old Men, grow bony in fe- veral Animals; and' fometimes they are found Offificd in Men. [See Fig. i. Plate 2.] THE Fibres, which run from, and are inferted into theie Tendons, are in different Plans, and lie upon one another in different Directions, being wound up together like a Clue of I Thread. FOR the Heart, as it is the Epitome of all Mufcular Motion in Nature, fo it is an Abiiract or Compendium of Mufcular Conftru&ion in general; the Fibres, which form this Bowel, containing all the different Species of Mufcles in Animal LiF- The number of all thefe different Species ol Mufcles is teckon d eight by Borelli, Cap. 2. Prop. 3. of his incomparable Book SDe motu Animalium. t 1 IlJ THIS
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