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Show 738 OfI/Jc Tat/201091 of the Motion oft/ac Heart and in Cm‘cLBook ll. nate Motions, as well as the Nerves highly irritated by an exuberance of Blood, comprefling of the Heart, and thereby hindrmg the paiTage of the Nervous Liquor in the Interfiices of the Filaments often lprodué'tivc c H A P. X X. of ConV'ulfive motions afflicting the Heart 5 There irregular motions are al- {0 generated in the origen of the Nerves, when they are difordercd with fome Acrimonious Matter vellicating the Fibres feared in the ambient parts of the Brain. As to the Cure of thefe Convullive Motions producing a great exube- rance of StagnantVital Liquor in the Heart, it denoteth frequent opening of a Vein, to follicite the motion of Stagnanr Bloodto abafe its quantity. And in reference to the caufe of Convulfions ( feared in the Nerves) producing the palpitation of the Heart, Cephalick Apozemes, Eleftuaries, Spirit of Hearts Horn, Spirit of Amber Succinated, (EM. may be of great ufe. 0f the Motion of the Bloodo Aving given my Sentiments of the Structure and Motion of the Heart, I will now Treat of the Motion of the Blood, as the End and Complement of the other; by reafon the Heart is defigned by Nature, to bea rare Engine of Motion, to make good the circulation of the Vital Liuor. ‘ . . q The All Wife and Omnipotent Agent created Man as the Soveraign of this lower Orb, after his own Image, and infpired him With the Spirit oflife, conferved by Motion ofthe Blood; and to this end the Grand Architect hath framed a fit Apparatus of Organs; the Heart as a noble Blood-work, furnifh~ ed with numerous appendages of Channels, as {0 many Sanguidué‘ts, the Veins and Arteries to import and export f'treams of Blood to, and from the Heart, as a choice Engine to promote the Motion of the Blood, the great prefervarive of Life. In order to the better underi'tanding of the Motion of the Blood, thefe Cone fiderables may feem to offer themiielves to our netice ', Firi't, Themanner how this Motion is accompliihed: Secondly, What quantity of Blood pafleth through the chambers of the Heart inaihort {pace of time. Thirdly, The Cilierns and Duets through which this noble Liquor floweth out of the Heart, firlt into the Lungs, and after runs into all parts of the Body: And Lafily, the end to which the Motion of the Blood is configned. The Motion of the vital liquor is performed by the Diaiiole and Syfiole of the Heart; the Firi't is rather a Laxament than a Motion wherein its Fibres The manner oFthe motion of the vital Liquor. are relaxed by dreams of Blood ( expanding the cavities of the Heart ) which being received through numerous Pores, into the inward Compage of the flelhy fibres, do enlarge their Dimenfions, and put them‘ upon greater and greater Contractions, as they more and more approach the center, whereby the Concave furface of the Ventricles grow lefs and lei-s, as they approach nearer and nearer to each other. In the Diai'tole of the diltended fibres, the Ventricles are dilated with' The Ventri‘ ofthc a quantity of Blood, filling up their Cavities, and in' the Syfiole, their con- cles Heart a'tc di‘ with cave Perimeter is taken up with Hefhy fibres, having imbibed innumerable ‘ Handed Blood in the Diallnle, and drops 0f BIOOds whereupon the inward fwelled walls of the Heart being cm ptied by 3 drawn clole to each other, do fqueeze the drops contained in the pores of Syfiole. the Fibres, and the greater Percams of Blood ( lately received into the emp- ty fpaces of the Ventricles) into the neighbouring Arteries, to make gOOd the Motion of the Blood. As to the manner how the motion of the vital Juyce is managed out ofthe Cii'tcrn of the Heart, into the adjacent San uiduéis; fome conceive it robe aéted mechanically, by a fpiral wreathing o the Fibres, after the fame manfler as water is fqueezed' out of wet Cloaths, by a greater and greater windlng them round, whereby the drops of liquor lodged in the many inter‘i'tices 0f the Filaments, do quit their Allodgments; but it may be proved by Realm and ocular Demoni‘trarion, thatthere can be no fuel} flraining the Blood by the confiriétion of the Ventricles of the Heart, by the fame Organ: an The manner how the Morin on of the Blood is made in the Blood: VclIeIs. |