Landmarks, medical and surgical / by Luther Holden.

  • Luther Holden
Date:
1877
Catalogue details

Licence: Public Domain Mark

Credit: Landmarks, medical and surgical / by Luther Holden. Source: Wellcome Collection.

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    the opening is situated on the outer wall of the meatus, and is then always such a narrow fissure as to be hardly discernible. The practical conclusion then is, that a probe can be easily introduced when the opening is in the roof of the meatus, but not without difficulty and laceration of the mucous membrane when on the outer wall. This difficulty indeed may be increased by the narrowness of the meatus, arising from an unusual curvature of the spongy bone. Nose. 18. The line where the cartilages of the nose are at- tached to the nasal and superior maxillary bones can be traced with precision. The close connection of the skin to the cartilages admits of no stretching ; hence the acute pain felt in erysipelas and boils on the nose. The external aperture of the nose is always placed a little lower than the floor of the nostril, so that the nose must be pulled up before we can inspect its cavities. Looking into the nostrils, we find that the left is, in the majority of cases, narrower than the right, owing to the inclination of the septum towards the left. A communica- tion sometimes exists between them, through a hole in the septum, as was the case in the celebrated anatomist Hilde- brandt. By dilating the alse nasi, we can get a view of the end of the inferior spongy bone. The middle spongy bone cannot be seen : its attachment to the ethmoid is high up, nearly opposite the tendo oculi. The cavities are so much narrowed transversely by the spongy bones, that in the ex- traction of polypi it is better to dilate the blades of the forceps perpendicularly, and near the septum. Mouth. 19. What can be seen and felt through the mouth} The upper surface of the tongue, * speculum primarum viaruml is a study in itself We notice, on its under sur- face, a median furrow, on each side of which stands out the ranine vein, lying upon the prominent fibres of the lingualis. On the floor of the mouth is the * frenum linguae,' in the middle line, with the orifices of the ducts of the submaxil- lary glands on each side of it. The glands themselves can be felt immediately beneath the mucous membrane. We can feel the attachment of the ' genio-hyo-glossi'