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.

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    tranfverfe Procefs is longer, without any Perfora¬ tion, as thofe of the Neck have* neither has the Body of the Vertebra any lateral Sinus, as thofe of the Back have, for the Reception of the Head of the Ribs. They are gradually lar¬ ger, as they approach nearer to the Os Sacrum $ which is indeed obfervable through the whole TraCl of the Spine, from the Head downwards, the lower being every where fomewhat larger than the upper : But this enlargement in the Loins is more remarkable than elfewhere, efpe- cially in the lad Virtebra of all, which joyns Os Sa- The Qs Sacrum^ which confids of fix Bones •, crum. though fometimes it has been obferv’d to have one Tab. xxi. more or one ]ef§. Thefe are call’d Vertebrce, but fpurious, and appear very didinCl in Infants, but in Adults they generally coalefce,fo as to feembut one Bone of an Equilateral triangular Figure with the Bafis upwards, which is ty’d to the lad Vertebra of the Loins, and laterally by long, thick and broad Procefles, to the Os Ilium on either fide: The exterior, or back-part of the Os Sacrum, is rugged, and a little convex 5 the Forami- interior fmooth and concave. It has ordinarily . five Perforations on either fide, which enlarging Sz xxifX1 thanfelves backwards and forwards, are in a manner double, through which pafs lome of the Nerves which make the Cauda Equina, and are the Production of the Spinal Marrow, which has no farther Pafiage through the middle or great Perforation of the Vertebra, than to the lad of the Loins, thefe fpurious of the Os Sacrum ha¬ ving no Hollow. Os Coc- To the lower Bone of the Os Sacrum is joyn’d .. the Os Coccygis confiding of three or four little xxii. jgones^ ancj tWQ Cartilages. It refembles a little Tail * the lower Bone, as in the Os Sacrum, growing gradually lefs than the upper, till it ends in a Cartilaginous Point, which is turn’d inwards for