Outlines of human osteology / by F.O. Ward.

  • Ward, F. O. (Frederick Oldfield)
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of human osteology / by F.O. Ward. Source: Wellcome Collection.

    58/464 (page 46)
    inargin is roiiyli for the attacliment of the cartilage of the eai-, and formeil by a curved phite of bone common to it and the glenoid cavitj' ; its i.i]iper margin is generally sniooth and rounded. The description of the canal itself will be included in that of the ear. (144) SunF.\CES. Anlciiur. Continuous with the interior surface of the .squamou.s portion ; to which it is joined by a sort of suture, that remains distinct even in old age, and indicates the original separation of these two portions of the bone. It is marked with cerebral impressions, belongs to the middle fossa of the cranium, and presents in front a small shallow (jroove, leading backward to an aperture called the hiatus Fallopii; which opens into a canal called the aqucductvs Falltipii. (1G4) The groove, which is sometimes double, lodges a nerve* and a small artery, which enter the aperture, and pass along the canal. Just in front of it this surface presents a notch or deficiency ; so that the carotid canal which lies imme- diately below, is here, as it were, unroofed. Above this notch there is a depression, generally shallow, but sometimes deep and ilistinct, for the reception of a nervous ganglion.f Lastly, above and behind the hiatus Fall(i|)ii, this surface presents an eminence, which indicates the position of the .superior scmiciy- cuhir cainil. (155) Poslirior. Continuous w^ith the interior surface of the mastoiil portion, marked with cerebral impressions, and belonging to the ]iosterior fossa of the cranium. It jircscnts, nearly in the centre, the smooth rounded orifice of the mtiilux audi- torius intfrnus; (Itil) and behind this a little slit, covered by a tfriangidar plate of bone, and forming the expanded orifice of a. mimito canal, called the aquc- ductus vtslibnti. il54) Between these two apertures, but on a sonicwh.-it higher level, there is a little depression of variable form and size, which gives at- * t.'ninial br;nu-Ii iit viiliiiii ihtvi'. t (.lasscriim ^Mn£,'li(m urolli norvo.