A manual of anatomy . aris oculi, obliquus interior, caput angulare,caput infraorbitale, caninus, nasalis, depressor al;e nasi, dilatator naris posterior,masseter, buccinator, orbicularis oris and pterygoideus medialis (twelve). THE PALATAL BONES 63 PALATAL BONES (OSSA PALATESTA) Each palatal bone is very delicate and of irregular shape. Itassists in forming the following fossae: nasal, orbital, pterygopalatine,infratemporal and pterygoid. It has two main portions, horizontaland vertical. The horizontal portion (pars horizontalis) forms about one-thirdof the hard palate. Its superior surface,
A manual of anatomy . aris oculi, obliquus interior, caput angulare,caput infraorbitale, caninus, nasalis, depressor al;e nasi, dilatator naris posterior,masseter, buccinator, orbicularis oris and pterygoideus medialis (twelve). THE PALATAL BONES 63 PALATAL BONES (OSSA PALATESTA) Each palatal bone is very delicate and of irregular shape. Itassists in forming the following fossae: nasal, orbital, pterygopalatine,infratemporal and pterygoid. It has two main portions, horizontaland vertical. The horizontal portion (pars horizontalis) forms about one-thirdof the hard palate. Its superior surface, smooth and concave, con-stitutes a part of the floor of the nasal cavity. The inferior surfaceis rougher and forms part of the roof of the mouth. The medialand anterior margins articulate with the neighboring bones while thelateral margin fuses with the pars perpendicularis. The posteriormargin is free and has the aponeurosis of the palate attached to it. Fig. 40. Orbital process Sphenoidal process Sphenopalatinenotch. Pterygopalatine groove[Perpendicular plate Orbital process ^(k SphtiiotiQlnhnf nnfcti i, /?? Coultal era
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecthumananatomy, bookyea
