DE HVMANI CORPORIS FABRICA LIBER VI. yP7 
plcrcntj&rurfuscomprclTopuImoncfubndcrcntjmagnamcjuimin afpcrxartcriarpropagi- 
nibusexpulmoniscoprcfTufieriprohibcret. Etfane hincdumdeualorumroborcioquimur, DnMcoj, 
'sfig-^B. 7 " (Jextra; cordts auricula: ufum petere potcrimus. Qiium cnim cor ualido impctu diftcntu fan- y"^ " ^"p'^^ 
^^^' guincm in de.^ttrum iplius finum cx caua allicit, SC quodamodo rapicns cum abforbit,quumq! cSlintiiionu 
ipfa ucna caua ui ex illa in alias corporis partcs fanguis non ita, ac ilic pulmonis tciiuis gratia 
nutritionisrefudarct,nonade6cralloualidoq!,ac artcrixconfl:atcorpore,pericliiarctur prole 
fto uena in ualida illa cordis attracftione,ne rumperetur, nifi lagax Natura dextram cordis aU' 
riculam creaflctjqus: ad cordismotusfequax,& languincplena,quum cor dilatatur,iarouini 
eumquem continet, indcxirumuentricuIumdiftundcrcpofTct, ipfaq;quodammodoin ucn, 
triculuinattraflionisimpctum foluturaconuoIucretur,cordiq;inftarpromptuari-jcf[ct.At<5 
huic uliii auriculxcorrefpondct cuticularis conftrudio.qua: leuis lV iiiiuriis iiitcrim pcrfcrcil 
discontumax,&adcordismotusfcquaxcft.cauaautcmuifitur,utcontincre niatcriam poflit: 
& fibris coftituitur, ut attradioni, rctcntioni & cxpulfioni fubfcruiai.Ncq; eliam carnc,qua: 
fibras ilIasamplecT:itur,deftitutacft. Vcrumquod cordis fubftantix ipfiusaiiriculxliibftan' 
tia adco conucnit, uidctur oftederc, &innata fibi facultaicad languinislcucm quandam cor^ 
dis ueniricuIopra;parationem conduccre.NcqucmehcrcuIcofcitantcr,fiquis indcfcffusNa' 
tura:operumindagatortucrit,auricularumufusucnitcxpcndcndus.nammodo comcmorati 
ufus ncquaquain prxcipui uideniur, quod ucl cx illarum motu cordc pcnitus concidcntc,&l 
7 vt iJii./i 'i.j ^xiuis feftionibus ■ tranfucrfim difteclo queas animaducricrc, quoiics in uiiio animantc cor 
dis motu iam ceftantc,nccj5 dilatatis cordis uentriculis, auriculas tamcii adhuc palpitarc,diftcii 
di^ac contrahiobfcruas.Cxterum ne irrita cordis dumdilataturindcxtrum finumfanguinis 
cx caua ucna fiat attradio, eodcm fcilicet rurfus dum cor comprimcretur pcr idcm orificiu Eu' 
zjfig''-^' ripiriiu,propulfo,'trcsmembranulas cauxorificio Natura prxpofin't,quxquidcmftnguiV Mctr^nulj- 
^jM- ^ , 1 ■ r- • a r /T 1 ■J ■ rimicMi:ar:- 
nein dilatato corde in linum cx caua intlucre linunt. at comprcUo cordc,nc lacm m cauam rc- fidj pra^fi^^ 
fluat,prohibcnt. Qiiumenim dextcr cordis finus diftcnditur, quod fit quotics brcuior reddi- r««i«/?u. 
. tus in latitudinem infigi .iter proficit,tunc membranx illx laxiorcs faftc, ad ucntriculi dcxtri 
lateracocidunt, acfanguini reclufo cauxuenx orificioaditumprxbcnt.Atucntriculorurfus 
conftrid:o,fcu,utinconftri(ftioncfii, iongiorcfaclo.&intcrim arflato, membranarum fibrx, 
ipfxcp mcmbranx proptcr cordis mucroncm ab ipfius bafi magis abfccdcntcm tcndutur . & 
quum uentriculi mucro in cum modum anguftior cfticitur,mcmbranulari! quoquc fibrx mii 
croniucntriculipoiiftimumadnatx, inuicem colIiguntur,acproindcetiainercgioncccntriuc 
nx cauxorificii, fuis cxircmisinuicemaccedcntes,orificium idoccludunt, acquo minusfaiT 
guisrurfus incauam profluat, obftaculofunt. Vertim &; ad hanca(fiioncm,finguis ipfca ueii 
triculi lateribus comprcftiis auxiliatur.is nanq! quum ucnx cauxorificiuni petit,ad poftcrio^ 
rem membraiiularum fcdcm impcturuii, easucrfusorificrj Ccntrum coinprimcns,utiIlxma' 
gis inuiccm conniueat, autor cft, fibi^ ipfi nc hac illi aditus dctur,obftat, uenx runc arterialis ^'"^^114^ 
orificiuinacccdens, quodquidcmincordis cotradionibuspatcnsfanguinem ucrfuspulmo' onjicij 
" ° ncm traniinittit. at quo rainus idcm rurfus dilataio cordc in dcxirum linum regurgitct, ' trcs raiio. 
membranx aricrialis uenxorificioprxfeflx caucnt. lllxctcniin quia principiuincum ucnx 
arterialis origine ducunt, ac furfum tenfx,in ucnx cauiiatem ccnrant,aicp ad ucnx latcra conci' 
dunt,{anguinein cordis contracSionibusprompiein uenaflucrefinunt. atquiim isrurlusob 
cordis dilatationc ad ucntriculii uacui fuga rctradus, aut ctia in pulmonis copreflib nc ucrfus 
ucnx arterialis caudicc protrufus ad cor impetu ucrgit,pcr ucnx latcra dcfccndcns,inicr uenc 
corpus &pofteriorcmcinbranuIarit fedem cocidit,lpacium quodintercorpusucnxacmcm^ 
branaseft,implens.Vndcctiancccirari6 mcmbranas dcorfumprotrudcnsipfis,utadorifictj 
uenx artcrialis centrum inuicein coniueant, orificiumq) claudanr, occafio cft.adc6 u t quanto 
uehemetius corfuadilaiationefanguineretrahit,ipfccj!pulmo intcrexpiranducomprimitur, 
tanto exadius mcmbranc ueiix orificiu obtiirantcs, fanguinc in cor reflucrcprohibctiucrum 
noitaaccurateidprxft,u,utnihilprorluslanguinisinpriinorctraflionisimpctuincorrurfus 
dcfluat.Namobftaculum,ncquidpcnitusregurgiiarct,efiingcrc,fuitimpoftibilc. Cxtcrum 
quuinartcrialis uenxmcmbranulxnullumnifiafanguincrcflucnic impctuinfuftincant,qux 
l7/i.N,N. autemucnx cauxorificioprxficiunturctialccundijmcordismotus ' fibrarumfuaruquibus 
dcxtri cordis uentriculi mucronc conafcuntur inteructii,ien fione cxpcria[ur,haud mirum cft, 
has illis longe ualidiorcs a Natura procrcatas effe.atquehuic cauporificio auriculam propter 
uehemcntem cordis atiractionc prxfici, fiiir hanc fabrorum follium acrcm attrahcntiu inodo 
cormoliatur, id enimcordi inagisquaincuiuisaIfjineft:fiucluccrnariiflainmxolciiatirahcn 
tis ritu,quippe hac uirtute cor quu innaii caloris fomcs exiftat,haud dcftituitur : fiuerurfiis ut 
magnes 
