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Show 0f the Heart. Boole ll. Book II. make many Spires in inverted politions, to thole Fibres that proceed from - ~ ~ ' ~ i l Heart. _ thtTiffsiiiiribriiifmry Mufcle is made up of divers ranks of firefly; Fibres, W which prefent rhemfelves to our Eye one after another upon t ell-imagination of a boiled Heart. The firft rank appear‘as foon as the 11;"me is is (in OH, and thel'e lodged more deeply cannot be dilcovered unlefs t e Heart c .- a i " ut Yard row. . . .rheFibrequ thiltljeotiséifand windings of thefe Fibres may be difcerned as‘if Weh wage ililiiiiflfsirffijr led by a thread, as Learned Dr. Lower phrafeth 1t 5 {but by ieiilonfilfinte‘tI itcats chlsreaLl. beingleis line, are wound'into a Skain, and eem at ['16: . , igC; , o refemble the complicated Fibres, not made up after the lame .01' ct as threads in a Sltain, buthave very different l'rogrefles, obfervrng various inethodc, which very much thwart each other; So that the Tuniclc of the Heart beingt removed) lbme may fancy that all Fibres of the Heart (are (filried obliquely from the Bah: of the Cone in one continued Euh if fLlit "ohm, upon a more curious fearch he fliall find, that few of them do ma 1e ha t e "l?""l'fjfi' length of the Heart, but a little fpace after they have arofe out o. t_ eTeno frillhiéliic don, they are reflected under the fuperior ranlt and then wholly dilappear : ii'ciiii "me And moreover it is remarkable, that the Ambient rank of Fibres are not all extended from the Bafe to the Cone of the Heart, but fome of them, when they have arrived to the middle of its Circumference, or rather I eiigrh, are i‘tflecled in the manner of an Arch, and are inferred With an oblique Duel: into the Tendon of the other tide and Ventricle. . The right Ventricle being cut of, let us confider the Mechanifm of the left, which in lome fort holdeth Analogy Wltli the right, and is different by Thcdoubl: reafon the double rank of Fibres in the left Chamber of the Heart hath an "'1" 0! the"'F id":[m inverted order terminating into oppolite Tendons; becaufe the outWard F1- "WWW" bres being carried the whole compafis of the Ventricle in the left fide, do EE'BETZEFQL" climb up with Spiral Flexures, and end into the Bafe of the Heart: mm" But the more inward Fibres of this Ventricle which have the lame elongation with the outward in reference to the Cone, are carried in an oppofite pol'ture, and alEerid to the Bale, and being infer-ted into its Tendon, do conllitute the inward wall of this Chamber. Ti'ecxtc‘ral And the external Fibres of this Cavity are not carried from the Bafe to lifiriffuflf the Cone, but quit their progrefs in the middle way, and creeping under "WEE; the fuperior Fibres, do climb up obliquely to the Tendon of the oppofite tin-MM»: to lClC. prefer: 5 I'Oll'l 0f t/JL' Hurt. 717 many Tendons into the Mitral Valves, conjoyned with the Tendon lodged in the Bafe of the Heart. And having difcourfed the various ranks and Progreffes of the Carnous Fi- The rptrairr. bres furrounding the fides and walls of the Heart , it may fecm not impro- 35335;? pet to treat of the Fibres enclofing the Cone of the Heart, which feem to be ‘h‘ "‘3"adorned with fomcwhat of a Spiral or windi ng Circular Figure, as tefembling the circular motion of the Blood. And as the inward Fibres of the Ventricle have a progrefs oppolite to that of the outward, fo the Fibres of the inward part of the Cone, proceed in a different method to the outward, as they are framed in fpiral Circumvolu tipns about the Cone of the Heart. , And becaule the Blood is to be impelled out of the left Chamber of the Heart into the Aorta, and by fmaller and fmaller Branches into the mol't re- The Fihrcsnf more regions of the Body 3 Therefore Nature hath the-leftthick am more thick and firong Fibres for the le t Ventricle molt wifely provided far more than for the right, which :g‘fn‘g‘g'gfi, protrudeth Blood only out of it into the adjacent parts of the l, un s. rhcrishr- i So that if we truly furvey the fubl'tance of the Heart, We {hall find it The Parathynot to be a Parent/9mg holding {imilitude with that of the Lungs, Liver, $1147: tibia. Spleen, or Kidneys, the firft being a fyfiem of Veficles of Air, Bram/aid {i‘g‘j‘gffififg Blood-Velfels, and the other a company of innumerable Glands, as molt of other'f‘t'L the Vifcera are, being f0 many Colatories of the Blood, fecerning it from its Bilious, Serous, or other kind of Recrements. But the Heart is a true Mufcle of the fame nature with thofe of the Limbs, as it is mol't manifelt to Autopfy, if the Flelhy Fibres of the Heart be rendred more firm and compact by boiling , and then the Heart will appear to be an Organ made up of many ranks of l'trong Fibres adorned with a Prifmatick Figure, of the fame hue, confifience, and {trength (as being united to each other by the mediation of many f'trong Membranes and Ligaments 1-) with thofe of the Limbs, and after the fame manner are not capable to receive much greater dimenfions in length, and its Fibres cannot be fevered from each other at any great The army pr. Ejjjgfiifg‘y' FFTF': ff; ' i ' difiance, without Laceration joyning the many rows of flclhy Fibres; and of the Membranes con- "H' when they 36%, are rendred hard and tenfe, as having their ranks drawn clofer together; wheres Upon the Compage of the Heart becomcth more firm and rigid , and the Cavities of the Ventricles more narrow, whereby their Contents are dill charged. The Fibrous fubflance and confiitution of the Heart, is différent from [Thrice {at And another rank of the Fibres having a contrary progrefs, do meet about ranks of Fi< mmmdm the Cone of the Heart, and have mutual Convol utions; So that the Fibres {giiccliic'siWi feared in the exterior wall of the left Ventricle, do rencounter thofe of the inward, about the Extremity of the Cone. tiriiiiiicaii-m Whereupon it is very \'lfil‘)l€ to a clear Eye, that the Fibres befetting the oncioyntmc. "emigrant, that of other Mufcles, as having a more folid, firm, uniform Compage, Coat~ gfdfgggggrt ed with a more bright Red than the Flelh of. other Mufcles, which is more "0m "W" t . loofe and flabby, whole more weak Prifmatick .. othchuitlcs. Columns may be more ealily dif-joyned from each other by a leis violent Laceration of their thinner Membranes. ed, iii‘cntiiviiii? though they may feem to have a contrary progrefs, yet they all concur to acoF the Heath complilh the fame motion, and do confining and bring inward the oppofite' Tendons, Again, The Configuration of the Fibres of the Heart, is not the lame TheFibrtsof . . . With other Mufcles, as not being . theHcartarc truly equidifiant , but crooked and fpiral, rpm. full of many Circumvolutions fur-rounding each other. Under the Coat encircling the Heart, is derived a rank of flefhy Fibres Arankof rifrom the Bath of the Heart, outward and inward wall of the left Chamber of the Heart to be continu and by drawing themfelves clofer to each other, do leflen the Cavities of the Chambers of the Heart, and fqueefe the Blood out of the right Ventricle into the Pulmonary Artery, and out of the left into the common Trunk of the Aorta. (Edvéiijiiiftihc: And this is worthy our remark, That allFibres do not terminate into the nary-cg. Tendons of the Margent, encrrcling the Oflza of the Chambers of the Heart, "mm" but many do end in the great Flelhy Fibres, called Columns, which do emit many and from its Circular Tendinous fubfiance, in- the brmww' Bar: 0?:th to which the Vena Carla and Pulmonary Vein do terminate in both Ventri. $33333," Cles of the Heart ; Theft: outward ranks of coutfe toward the Cone, and afterward beingFibres do at firf't tend in adireét "mm" varioufly Implicated, have a RCCIOgrade progefs toward the inward reced es of the Ventricles. Xxxxxxxx Under |
