Volume 2

Anthropologia nova, or, a new system of anatomy / [Appendix].

  • James Drake
Date:
1717
Catalogue details

Licence: Public Domain Mark

Credit: Anthropologia nova, or, a new system of anatomy / [Appendix]. Source: Wellcome Collection.

    253/336 (page 405)
    )| of the upper edge of the Rib next below. Thofe if of the internal, rife from the infide of the lower :: edge of the upper Rib, and running obliquely :i towards the Vertebra, are inferred into the infide H of the upper edge of the next Rib, decufiating ({ each other in right Angles, without any neceffi- v ty of a contrary Aftion. All thefe common Mufcles co-operate with il the proper ones of the Ribs, in drawing them ]i upwards , and though their united Force may | feem to be infinitely greater than the proper weight of the Ribs would require, yet when we :: confider the weight of the Atmolphere, which :: antagonizes, we fihall find nothing fuperfluous in ([ this ample Provifionj even though the Mufcles which draw the contrary way are inconfiderable, H compar’d with them: For though the feveral if Infertionsof thefe Mufcles, may make them look a as if they wrere defiin’d to move different Parts and Ribs diftinftly y yet the continuity of all the } Ribs wfith the Sternum, obliges all thefe Mufcles n to aft together, and to lift up the whole Com- a pages of the Sternum and Ribs at once. The common Mufcles, which ferve for con- n trafting the Cavity of the :Thorax., by pulling fl down the Ribs, are the Sacrolumbares, and the 1 Diaphragma y to which may be added the Abdo- l|j minal Mufcles y which being fix’d partly to the H lower Ribs and Sternum, mult necefiarily in their hAftion, draw downwards. But of thefe lafh i<j we have already given the Defcriptions elfe- | where. The Sacrolumbar is hath its Origination in com¬ ic mon with the Dorji LongiJJimus y and externally iiarifes tendinous, from the Pofierior part of the Spine of the Os Ilium, the fuperior Spine of the Sacrum, and from all the Spines of the Vertebra jl of the Loins. Internally k arifes flefhy y not on- \ ly from thofe Parts, but from the tranfverfe Pro- D d cftfes 401 Internal, Contrac- tores. , Sacro- lumbaris. Tab. xxvii.