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Show Book II. u 7 I 4. Book 1], 0f the Heart. 715 - intiit; 32/11:: Pericardimn of Man, to help the Diafiole of the Mldl‘llT, {afl‘E‘d , UL!) ti more 13 which Arch, ment to reduce it from a Plain to an by reafon of his ereét pollute of Body. equally diilant too in relation to the Fternon, as being meafured by a right line j. whereupon the Bale will be found not to incline to either Extremity of the Sternon. And farthermore the Hearts of Bruits are feared more truly in the middle of the Thorax, than this of Man. ' The Connexion of the Heart is made principally by the chm (320.: and "mechani- Aorta, which fallen its Bafe to the backlide of the Thorax, and it is tied flail" alfo to the Fer/airman], and Diaphragm by its interpolition. The greatnels of this noble Viflm, is various in feveral Ages, and it hath "Th: dyifmff greater dimenlions in Man, if regard be had to the proportion of his Body, iii-lit". l" than in any other Animal, and it is commonly in Perfons of mature age, fix fingers longs, and four broad; and it hath been obferved to be leis, and more firm and compaft in dating men of Eminent courage, than in Cowards who are laid to have flabby great Hearts. The Heart is adorned with a kind of Pyramidal Figure , as being TlieFirFUl'f C HAP. XIV. 0f the Heart. more enlarged in its Bafe, and ending in a Cone, fomewhat refernblinga Pine m": Hm" He Heart being the mod noble Machine motion, belonging to the exu T cellent Fabrick of Man's Body, may be truly entitled the Sun of its Microcofm, from which the rays of Life, feared in the Blood, are dilplayed through its Ambient parts, and admitteth fome Afperities in relation to by Arteries into all parts of this little World; and in fome fort may receive its Fat. the appellative of the fountain of Life and Heat, as by its frequent repeated motions the innate heat, vigor, and fpirit of the Blood, are conlerved, and the gentle flame of Veflal Fire, the prefervative of Life, is maintained. And my intention is to treat firlt of its Strué'ture (as the ground and foundation of its motion, afterward of its motion, as the ufe and accomplifliment of this choice Machine confifiing of variety of parts, difpofed by the hand of the All-wife Architect in molt Elegant order. Ilzeui‘per in. The firfl part that accofteth our fight, after the (Perimrdium is firipped off, Sffi‘}:‘,"‘r°F is its proper lntegument, which is a thin, firong, and denfe Tunicletas made up of many Membranous clofe-{truck Fibres ( very curioufly interwoxen, in divers poftures) \vhofe Interfiices are filled up With a Sucrws .Nutrzem: or Seminal Liquor, adhering to the fides of their Coats in their firll: formation 3 whereupon they are rendred plain and fmooth and eafie to this choice Compage, as giving no difcompofure to its outward parts in a conllant and neceflary motion. This Tunicle, I humbly conceive to be the fame with the thin outward Coat of the Arteries, which derive their origen from the Heart, and doth invefi the Ventricles of this noble part as well as its ambient parts. Thrul'enfth: As to its ufc it may be to give a great firmnefs to the Heart, as confining iiiiltnigw Hc'" Nut; and is not perfeétly Orbicular, as being fomewhat more deprefled in its anterior and pollerior Region, and more Protuberant on each fide. The Surface of the Heart is for the moft part linooth, only it hath fome Tucsurfinc l little inc (1 ualit y in referemee to the Blood-7\e {fels , w hi c h 3 re d'iv ar'icate .1 Mm‘cm' its fpiral Fibres in their due feat, and to preferve the tender branches of the Coronary Blood-vellels, Which fport themfelves in numerous divarications This Noble Machine of Motion may be truly Ptyled a Mufcle, as being UK "£312.13 furnilhed with all its parts, difpofed in a molt Elegant order, and is Com- a "mum pounded of Carnous Fibres, Nerves, Tendons, Arteries, Veins, é‘f. This excellent Mufcle being beautified With a kind of Circular Figure in point of its Circumference, and Pyramidal in reference to its length, is furnilhed with divers rank of Flefhy Fibres, which do not take their progtefs in right Lines butin oblique, before they are inferred into their Tendons, to give them the advantage of Contraaing themfelves with greater force, as making their approaches nearer to each other 3 whereupon the body of this Eminent Mufcle groweth more firong, rigid, and tenfe, as being highly invigorated in its Contraction. And in a Well boiled f~heeps or Bullocks Heart, being divef'ted of its Vef- The lenient fels and Auricles, a {trong Tendon may be difcovered, which encircleth the "m." "'"E Margent aboutthe right and left entrance into its Ventricles: Into this Ten- into which fiflfi‘l‘m don ( as Learned Dr. Lower hath well obferved) many Carnous Fibres ( infcrtrdtegrating the Ambient parts of the Heart) are Inferred with an oblique pofition. And not only the outward region of the Heart, but the inward recelTes rhcvcnmof the Ventricles too, are befet with Flefhy Fibres carried in Flexures, ex' 3:30:21;cept fome few Fibres , which climb directly upward through the out~ figmfl‘m‘" ward furface of the Ventricle, and are inferted into the Bafe of the Heart. through the fubf‘tance of this fine Tunicle, overfhadowingand encircling the Perimeter of the Heart. Thu-Mn," The lituation of the Heart is generally conceived to be in the middle of rank and order, and are carried in a contrary progrefs, by reafon the Fibres vented}? lodged underthefe right ones, do climb up obliquely from the left fidc to Shiiiift'iwi? °' ""1""- the Thorax, which mull be underflood of its 734/21, and not of its Cone, the right, and terminate into the Bafe of the Heart, and do very much re- "m" which fornewhat inrlinerh in Man toward the left lide 5 and as to the length of the Thorax, the Bale of the Heart is much nearer to the firfl: Vertebre, than the Cone to the twelfth, and moreover the Bale of the Heart is more dillant from the upper Bone, than from the low er, the Sword-like Cartilage. And its Bafe may be more truly faid to be placed in the middle of the Thorax in reference to its left and right fide, and the upper region of the Bale is equally The other Fibres which befet each Ventricle of the Heart, have a double $3539ng fumble the winding Cavities of the Ear, in their Spiral Circumference. Other Fibres are alfo feared under the AmbientFibres, which pals in an Oppofite pollute to the former, and as the other treated of before, run from theleft tide toward the right; So thefe arife out of the right lide of the Heart, and take their progrefs toward the left in oblique manner, and encircle both Chambers of the Heart, and afcend to the Bafe of the left fide, and malce |