The anatomy of the human body / [William Cheselden].

  • William Cheselden
Date:
1732
Catalogue details

Licence: Public Domain Mark

Credit: The anatomy of the human body / [William Cheselden]. Source: Wellcome Collection.

    36/454 page 16
    } L 16 Of the Bones of the Head. hemifpheres of the brain.,, In thin feulls this bone has ufually a large thin fpine in the middle of the the crown of the head; but in thick fculls it is frequently wanting, and in very thick ones ufual- ly a Sinus in its place ; the ufe of this fpine is to ftrengthen thin {culls. Immediately above the Os Ethmoides in this bone, is a {mall blind hole, through which runs a vein into the beginning of the longitudinal Sinus of the Dura Mater; __be- tween the eyebrows in this bone, are two or three large Sinufes, and fometimes four or five, which | lead into the nofe; and on the upper edge of each orbit, a fmall perforation, or a notch, through which nerves and an artery pafs fecure to the fore- head: It has alfo a fmall hole in each orbit near the Os Planum, through which paffes a branch of the fifth pair of nerves. The Sinufes and {pine in this bone make it very dangerous, if not impra- éticable, to apply a trephine on the middle and lower part of the forehead. | Os EruMoIpeEs or CRIBRIFORME, is Tab. Viil. o8. feated in the arterior part of the bafis of the fcull, being almoft furrounded by the laft defcribed bone; it is full of holes like a fieve, through which it is faid the olfactory nerves pafs, which I could never difcover. In its middle arifes a large pro- cefs named Crifta Galli: And oppofite to this a thin one which in part divides the nofe. The sreater part of the Lamine Spongiofz in the nofe, belong to this bone. Os
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