The workes of that famous chirurgion Ambrose Parey translated out of Latine and compared with the French. by Th: Johnson

CHAP. V. The Anatomicall Administration of the Sternon.

THe Coate investing the ribs, which the common Anatomists call Pleura, is the last of the containing parts of the Chest, which because it lies hid in the inner part therof, it cannot be showne unlesse by pulling asunder of the Sternon; wherefore wee must now shew the manner of opening the Sternon, that hereby we may not violate the originall or insertion of any of the muscles. Wherefore first you must understand that he which will shew in their proper place the originall and insertion of the pectorall muscles, of the Mas∣toides, of the two muscles of the bone Hyois, of the Muscles subclavii and intercar∣tilaginei,

ought first of all to separate all the pectorall muscles from the sternon and the gristles from the true ribs; then to cut the ligaments, next the bones themselves, even from the sixth true rib to the clavicles.

And then shewing the Mediastinum stretched under the sternon all the length there∣of, he must seperate the sternon with his knife and bend it up to the clavicles, and there cut it, reserving together with it the foure muscles, that is, the two Mastoides and the two moving the bone Hyois, because they either wholy or for the most part arise from the sternon.

Lastly the Clavicles being somewhat thrust upwards, the Gristles must on each side be turned outwards towards the arme; that so the containing parts of the chest may not onely lye open to veiw and be easily shewed, but also the muscles may bee contained in their place, untill they come to be shewed in their order.

And because the Collar bones must be lifted up very high, that the recurrent nerves may be more easily seene and the distribution of the veines and arteries, the two small subclavian muscles one on each side must bee showne by the way, who have their originall from the inner and fore part of the Clavicles, and an oblique des∣cent to the sternon towards the gristle of the first rib.

For the Clavicles cannot be thus separated, but that these muscles must be viola∣ted and spoiled. Also you may divide the sternon in the midst, that you may shew the inward pectorall muscles whole, having separated the muscles which arise from the upper part. All which things being performed as they ought, we must come to the Coat investing the ribs and then to the Mediastinum as arising from it.