A text-book on diseases of the ear, nose and throat . projecting border of the cartilaginousseptum, the triangular or upper lateralcartilages, the small minor or quadratecartilages, and the alar or lower lateralcartilages. The ux:>per lateral or triangu-lar cartilages are two flange-like extensions of the cartilaginous the centre, in their upper x^ortions, they are continuous with the sep-tum, but below this are divided from it by a fissure. The triangular car-tilages pass beneath the edges of the nasal bones and nasal processes ofthe superior maxillae for the distance of a few mi
A text-book on diseases of the ear, nose and throat . projecting border of the cartilaginousseptum, the triangular or upper lateralcartilages, the small minor or quadratecartilages, and the alar or lower lateralcartilages. The ux:>per lateral or triangu-lar cartilages are two flange-like extensions of the cartilaginous the centre, in their upper x^ortions, they are continuous with the sep-tum, but below this are divided from it by a fissure. The triangular car-tilages pass beneath the edges of the nasal bones and nasal processes ofthe superior maxillae for the distance of a few millimetres, articulatingwith them. Their lower borders are covered by portions of the alar car-tilages, so that the margins of the triangular cartilages are covered asseen from without, except at their central junction. The lower bordersof the triangular cartilages project into the nose, dividing its vestibuleinto an upper and a lower portion. The lower lateral or alar cartilagesbound the greater portion of the nostrils anteriorly. Each cartilage has. %v ^- Framework of the external nose.(Zuckerkandl.) F, nasal process of fron-tal bone ; n, nasal bone ; s, s, ascendingbranch of superior maxillary bone ; t,triangular cartilage ; a, a, lateral limb ofalar cartilage; i, inner limb of alar car-tilage : between a and t, sesamoid carti- AXATOMY AND PHYSIOLOGY OF THE NOSE AND NASOPHARYNX. 223 two plates, the outer oue of which lies along the outer border of thenostril, while the inner one meets its fellow in the centre and passes back-ward along the inner border of the nostril. Both x^lates unite in front atan acute angle 5 neither extends backward along the entire length of thenostril, but stops about one-half way back, so that the remaining spaceis filled in with fibrous tissue. Thus the ala of the nose is made uj) ofthis and skin only. The minor alar cartilages are small cartilaginousplates behind the alar cartilages, lying as continuations of these in thefibrous tissue. The muscles
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