Human anatomy, including structure and development and practical considerations . riu cartilage of the septum (cartilaj^o sc|»ti nasi) (Fi^. 1171) completes themedian partition that divides the ri^iit and left nasal fossce from each other andrepresents the anterior extremity of the primordial cartilaginous cranum. It isirregularly rhomboidal in form and so placetl that its superior angle lies above,received between the nasal Ijoncs and the median plate of the ethmoid, and itsinferior angle below, resting upon the incisor crest of the maxilke. The anteriorani-le is directed forward antl tlie po
Human anatomy, including structure and development and practical considerations . riu cartilage of the septum (cartilaj^o sc|»ti nasi) (Fi^. 1171) completes themedian partition that divides the ri^iit and left nasal fossce from each other andrepresents the anterior extremity of the primordial cartilaginous cranum. It isirregularly rhomboidal in form and so placetl that its superior angle lies above,received between the nasal Ijoncs and the median plate of the ethmoid, and itsinferior angle below, resting upon the incisor crest of the maxilke. The anteriorani-le is directed forward antl tlie posterior, much the more pointed, is prolongedas the sphenoidal process (processus splicnoidalis scpti cartilaj^iiiei) for a variabledistance between the mesethmoid and the vomer towards the body of the sphenoid,which exceput)nally it may reach. The antero-superior margin of the septal carti-hue, thickest above, is attached to the under surface of the internasal suture for a Fk;. 1171. Frontal sinus Septal cartilage Mesial crus of left lower lateral cartilage Vomerine Perpendicular plate of ethmoid - Sphenoidal sinus ^^^^ Posterior naris Sphenoidal process Vomer Nasal septum \ ieweil from left side ; mucous membrane has been partially removed. distance of from 12-15 mn^- Below the nasal bones, the margin of the septalcartilage is continuous with the upper lateral cartilages which form ring-like expan-sions (al^e) of the median plate. Still lower, the free-margin of the latter extendsbetween the lower lateral cartilages to within about a half inch from the tip of thenose which, however, it does not reach, the medial crura of the lower lateral platesintervening. The postero-superior margin, the thickest part of the cartilage, isattached to the free margin of the perpendicular plate of the ethmoid bone. Thepostero-inferior margin rests upon the anterior part of the upper margin of thevomer and the incisive crest as far as the anterior nasal spine, where the borderpasses i
Size: 1682px × 1485px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
