. Diseases of the nose and throat . Fig. 51.—Frozen section of the head of a child aged 5 years. 1, Sec-tion through back part of eye. 2, Posterior ethmoid cells. 3, Superior tur-binated bone. 4, Middle turbinated bone. 5, Antrum of Highmore. 6, Sep-tum curved to the left. 7, Inferior turbinated. 8, Superior meatus. 9,Middle meatus. 10, Inferior meatus. (From Primroses AnatomicalMuseum, University of Toronto.). Fig. 51a.—Frozen section of same child, taken two centimetres an-terior to Fig. 51. 1, Anterior ethmoid cells. 2, Middle turbinated , Septum curved to the left. 4, Inferior turbin
. Diseases of the nose and throat . Fig. 51.—Frozen section of the head of a child aged 5 years. 1, Sec-tion through back part of eye. 2, Posterior ethmoid cells. 3, Superior tur-binated bone. 4, Middle turbinated bone. 5, Antrum of Highmore. 6, Sep-tum curved to the left. 7, Inferior turbinated. 8, Superior meatus. 9,Middle meatus. 10, Inferior meatus. (From Primroses AnatomicalMuseum, University of Toronto.). Fig. 51a.—Frozen section of same child, taken two centimetres an-terior to Fig. 51. 1, Anterior ethmoid cells. 2, Middle turbinated , Septum curved to the left. 4, Inferior turbinated bone. 5. Antrum ofHighmore 6, Hard palate. 7, Vault of mouth. (From Primroses An-atomical Museum. University of Toronto.) DEFORMITIES OF THE NASAL SEPTUM. • 81 and he tried it in a great many, was the arrest of the developmenton that side, with deflection of the septum, the palate, the intermaxil-lary and frontal bones, all toward the blocked cavity. At the sametime, the unobstructed cavity would be larger than natural and morefully developed. The reason is the rarefaction of the air in the closednostril during inspiration, caused by the rush of air through the openone, with the consequent atmospheric pressure upon all sides of theclosed cavity. Collier applies the same principle in unilateral nasal obstructionoccurring in men as Zeim does in his experiments on animals. Ofcourse, before the eff
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