. Quain's Elements of anatomy. ominences of the cheeks,formed by the anterior inferior parts of the malar bones. The lower jaw completesthe skeleton of the face. Tlie foramina in this region, on each side, are the snpra-orbital foramen or notch in the superior margin of the orl)it, the infraorbitalforamen below the inferior margin of the orbit, the mental foramen of the lower jawand the small malar canal of the malar bone. The anterior na-sal aperture is often markedly unsymmetricaL one half of the opeuin? beingbroader and shorter, while on the other side it is narrower and moie deeply excavat
. Quain's Elements of anatomy. ominences of the cheeks,formed by the anterior inferior parts of the malar bones. The lower jaw completesthe skeleton of the face. Tlie foramina in this region, on each side, are the snpra-orbital foramen or notch in the superior margin of the orl)it, the infraorbitalforamen below the inferior margin of the orbit, the mental foramen of the lower jawand the small malar canal of the malar bone. The anterior na-sal aperture is often markedly unsymmetricaL one half of the opeuin? beingbroader and shorter, while on the other side it is narrower and moie deeply excavated belowThi<! is associated with a corresponding deviation of the cartilag-inous part of the nose, whichpoints towards the side on which the wider half of the aperture is placed. (H. Welcker, •• DieAsymmetrien der Xase und des Xasenskeletes, Stuttgart, 1S82.) The orbits are pyramidal fosste, irregularly quadrilateral, Avith their basesdirected forwards and sliulitlv outwards, their inner walls being nearly parallel, and. Fig. 65.—Front view of m.\lk skull atABuLT TWESTV YEARS. (AUeu Thomson.) ^ 1. frontal eminence; 2, glabella, between thesuperciliary riiges, and above the transversesuture of union witli the and superiormiixilhiry bones ; ::i, orbital arch near thesupraorbital notch ; 4, orbital surface ofgreat wing of sphenoid, between the sphe-noiiial and the spheno-maxillary lissures :5, anterior nnsdl aperture, within which areseen in shadow the vomer und the turbinatebones ; ti. superior maxillary bone at thecanine fossa—above the figure is the infra-orbital foramen ; 7, incisor fossa ; 8, malarbone ; 9. symphysis of lower jaw ; 10, mentalforamen ; 11, vertex, near the coronal suture ;12, teniporal fossa ; 13, zygoma; 14, mastoidjjrocess ; 15. angle of the jaw ; Iti, mentalproaiberance. In this skull there aie courteenteeth in each jaw, the wisdom teeth not havingyet appeared. their outer walls diverging so as t(j be nearly at right angles to each other.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectanatomy
