ANDREAE VESALII BRVXEOLENSIS 
„ Lisipfiu _ 
nus cxamiiiaucrit, id neutiquam fe ofcitanti offcret. Porro quantu haiTtcnus afTcquor, ieptum 
tranfucrfum proprio motu ofBs peftoris infcriorc tcrminu, & fpuriarum coftaru cxtrcma ^ ad 
fuum caput tanquam ad ccntru intro trahitj nonnihil quoqi furfum ucllcns . Scpti enim irant 
ucrfi' caputinmcdio raoucndarum parrium rcponiiur,&cIatiori fui capitis fcdi,qua; thoracis 
amplitudincm rcfpicit,neruiaccruicedccurrentcsin(cruntur, Quumitaquefcptuminfccon- 
ucllitur , &: ipuriarum coftarum extrema quodammodo ad ccntrli colligit , folam infcriorcm, 
eandcmq)antcrioremthoracispartcm,quamlpuriarumcoftarumcartilagincsconrtituunt,arx 
(flat. poftcriorem ucr6,qux ab harum cartilagine ad iicrtcbras ufque habctur, dilatat, ac inui.- 
cem quincp inferiorcs coftas dirimit, una cum fexta & fcptima, thoracis coftis, quarum ctiani 
cartilaginibus feptum applantatur. Hac igiturratione inferiore thoracis partcm fcptum tranf 
ucrfumdilatat,acdiftendit, Vtuero quod dico , afTcquaris manifcftius,primum utrancjue 
manu notharum coftaru cariilaginibus accomodato , &: uiatiracflo fpiriiu,qui iniro rurfumcp 
cariilaginu cxircma ucllanlur, fcntito. dcindchic una manu rclida , altcranipoftcriori coftarii 
regioniexiefamimponc,&rurrusfpirituanumpto,quaIiicriuxta dorfumcoftx dirimantur, 
&cariilaginesinuiccmconniucani,cxaminato,nififorianis canis,aliud'ucanimaladmanum 
Iir,cuius uiua fedtio fcpti funclioncm doceat, Atque in hac adminiftraiionc caucndum cft, ne 
dum animal intro fpiriiii ducit,id exfpirarc arbitrcris,quod fane faccrcs prompiiflimc,fi dunia 
xaifjDuriarumcoftarumcxiremis,illisqjfcdibusanimuadhibercs, quibusfcptumimplataiur, 
Ncqucadhuc me latcl, quofdam noftrx xtaiis pra^cipuos uiros, qui mihi inicrdum admini- 
ftranti aftitcrc, proprium lepti motum ad infcriora licri contcndcrc, quos prxtcr ° ncruorum o f. a. 
infcrtionem,qux ex ccruicis dorfali mcdulla in fupcriorc fcpti fcdcm perficiiur,& uiuam lldtio " J 
nem longecuidentilTima doccrc oportuii,qu6daluum cxoncratcs fpiritum, ualidecomprclTo ^p'. ' 
intcrim ihoracc,rctincamus,non autcm continuo infpiremus,&: ihoraccm dilaicmus, quod la 
ne tum facicnduin cftct, fi in thoracis dilatationc leptii dcorfum duccrciur, ut icilicct tunc cum 
abdominismufculis,cxcretioniopitularctur,Aiqpid etiamdocetualidinimainfpiraiio, quoii- 
cs illamita moliri conaris, utfpuriarum coftarii cartilagines, furfum introrrumq; mouerinon 
ftatucris,quandoquide quum ui illas retincs,una atcp altera infpirationc fafla,ita carlilaginum 
fcdcs Iaborat,ac fi ui cam pugnis coUififtcs, Vcrum opiiior & te quoqucuarijs modis h;vccx- 
pcriri,quemadmoduiri &: cgo nunc adco uari^s rcfpiraiionibus atrcnio,ur pra; laftitudine cala 
musemanibusucniat rcponedus,add.ttamen,&:fufFocatosliquid6mcxfcntctixftjbfcribcrc, 
His nanque quoniam diftcnto dilaiatocg thoracc, fcptum tranfucrfum ad fiipcriora attraclum 
diftcntumqj, adco inlcr fccandiJ apparct, ui feptum in dioracis amplitudini; allatum, iccur &: 
uenlriculii in thoracc trahat, difticilcmq! illoru fcclione nobis exhibeat, qux tamcn ilico prom 
pta euadiijfi thoraxalicubi intcr coftas,aut ipfum feptum pcrforclur,id enim tunc ftaiim flacci 
dum,inftar madidi panni dcorfum concidii, ac plus,quam uoIcs,iccur, &: ucniricuin propcii 
dcrc finit, cjuod, quonS pacSo fiat, illi dcmiJ non ignoran t,quibus mufculorum conlraiflionis 
MufmhrS &:laxationisratio pcrfpccra eft. Hadtcnus omncs mufculos foliscoftarumolibus fubfcrui- 
tfc«c™ mo, (.,-,[(.5 cxplicauiinus,qui fimul omncs in fimijs numcro funt ocluaginta quincii,hominibus aute 
mcritio, cr ociuagintaunus.(^iuucro&:hiso(fioabdominismufculos,inthoracecoprimctiuinclancm 
fLtndoillifuo prorfiisreponcndos rubnc<ftimus,in hominc omncs funtocluagmla nouc, in fimrjsaitt tres &: 
fingm^- nonaginia," Obliqui enim dcfccndentcs fi tendltiir, admodii h^timiliorem thoracis fcde com- f jMs. 
primetes^thoracear&nt^^^Rcctiucr^.cu^obliquearcendetibuscoftasdcorfumtrahunt^tho ^jtj.a. 
raccmq; non paru coftrin gunt. ' Traiafucrfi aute intr6 coftas adducetcs , ad ardan dum thora >■ 4 ■ 
ccm faciunt.Porro eos qui brachiij&: fcapulam moucnt, parumeiiam thoracismotibus auxiH "''''^ 
ari.aliquisarbitraripoflct, fialiquandoihoracc fortius coftringcrent.ucrumitalongcadhuc 
magis rclpirationis mufculorij numcrus cxcrcfccret, qui omnes,non in omnibus refpirationi 
bus fimul opcratur. Scd fingulis rcrpirationis fpecicbus, Natura proprios largitur mufculos, 
Suntauicprimuinrcfpirationisduoocncra, infpiraiiofcilicet,&:exfpiratio, Sihxcrurfus fin- 
gula duplices partes habcni. Bxfpiraiionri enim alia cft naturalis,&:no uioleta,quj; nulla nifi na 
turali urgclc ncccfl^tatc fit,alia uehemes &: uiolcia,quam cfflatione nuncupamus.Sic quotf iii 
fpiraiio alia naturalis,alia aduocis gcneraiione,autadaliud quippia uiolcta cxiltit, atcf hjc 
rurfus differetix plurimum maioris minoris'ucratione intcr fe uariai, Naturalis infpirationis 
&:cx(pirationis' feptum duntaxatautor ccnfemr,abundeenimipfo contradto tenfo'uc,medici ' 7 faK^i 
thoracem dilatari, infpiralionccppcrfici arbitrantur.deindcrurfus laxaio fcpto, thoraccm fua 
grauitatE 
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