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  • noun Plural form of meatus.


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  • The outer wall of each naris is grooved by three fossae, called meatuses, and these are situated between the spongy bones.

    Surgical Anatomy Joseph Maclise

  • On this wall are three irregular anteroposterior passages, termed the superior, middle, and inferior meatuses of the nose.

    II. Osteology. 5d. The Interior of the Skull 1918

  • It is also thick over the septum; but it is very thin in the meatuses on the floor of the nasal cavities, and in the various sinuses.

    X. The Organs of the Senses and the Common Integument. 1b. The Organ of Smell 1918

  • Owing to the thickness of the greater part of this membrane, the nasal cavities are much narrower, and the middle and inferior nasal conchæ appear larger and more prominent than in the skeleton; also the various apertures communicating with the meatuses are considerably narrowed.

    X. The Organs of the Senses and the Common Integument. 1b. The Organ of Smell 1918

  • Here it gives off its posterior lateral nasal branches which spread forward over the conchæ and meatuses, anastomose with the ethmoidal arteries and the nasal branches of the descending palatine, and assist in supplying the frontal, maxillary, ethmoidal, and sphenoidal sinuses.

    VI. The Arteries. 3a. 2. The External Carotid Artery 1918

  • While in the pterygopalatine canal, it gives off posterior inferior nasal branches, which enter the nasal cavity through openings in the palatine bone, and ramify over the inferior nasal concha and middle and inferior meatuses; at its exit from the canal, a palatine branch is distributed to both surfaces of the soft palate.

    IX. Neurology. 5e. The Trigeminal Nerve 1918

  • From the nasal cavity its continuity with the conjunctiva may be traced, through the nasolacrimal and lacrimal ducts; and with the frontal, ethmoidal, sphenoidal, and maxillary sinuses, through the several openings in the meatuses.

    X. The Organs of the Senses and the Common Integument. 1b. The Organ of Smell 1918

  • The olfactory pits form the rudiments of the nasal cavities, and from their ectodermal lining the epithelium of the nasal cavities, with the exception of that of the inferior meatuses, is derived.

    I. Embryology. 12. The Branchial Region 1918

  • —The arteries of the nasal cavities are the anterior and posterior ethmoidal branches of the ophthalmic, which supply the ethmoidal cells, frontal sinuses, and roof of the nose; the sphenopalatine branch of the $$$ which supplies the mucous membrane covering the conchæ, the meatuses and septum, the septal branch of the superior labial of the external maxillary; the infraorbital and alveolar branches of the internal maxillary, which supply the lining membrane of the maxillary sinus; and the pharyngeal branch of the same artery, distributed to the sphenoidal sinus.

    X. The Organs of the Senses and the Common Integument. 1b. The Organ of Smell 1918

  • Wotton. _, p. 317, et seq.] [Footnote 4: Of clay he says, "It is a cursed step-dame to almost all vegetation, as having few or no meatuses for the percolation of alimental showers."] [Footnote 5: Sir William Temple gives this list of his pears: -- Blanquet,

    The Atlantic Monthly, Volume 12, No. 73, November, 1863 Various


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