Essentials of anatomy, including the anatomy of the viscera : arranged in the form of questions & answers prepared especially for students of medicine / Charles Nancrede.

  • Charles B. Nancrede
Date:
1899
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Licence: Public Domain Mark

Credit: Essentials of anatomy, including the anatomy of the viscera : arranged in the form of questions & answers prepared especially for students of medicine / Charles Nancrede. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    Describe the floor. Nearly flat, formed chiefly by the orbital plate of the supe- rior maxillary'^, and to a less extent by the orbital processes of the malar^'^ and palate bones; it presents just external to the lacrimal canal a depression for the inferior oblique muscle ; externally, the malo-maxlUary suture; near the middle, the iiifra-orhital groove; and posteriorly, the 'palato-maxillary suture. Name the bones forming, and the points of interest upon the inner wall. It is flattened, formed by the nasal process of the superior maxillary, the lacrimal^*, os planum of the ethmoid, and the sphenoidal body. It presents in front the Jacrhtal groove''^^ bounded behind by the lacrhnal crest; further back respec- tively the lacrimo-ethmoidal and ethmo-sphenoidal sutures. What forms the outer wall? The orbital plate of the malar and the greater wing of the sphenoid, and on it are seen the openings of one or two malar caiiah^^ and the s])heno-malar suture. Describe the superior external angle of the orbit. Posteriorly, the splienoidal fissure (foramen lacerum ante- rius)^^ for the entrance of the third, fourth, three branches of the ophthalmic division of the fifth and sixth nerves, and branches of the middle meningeal artery, a process of the dura mater, sympathetic nerve filaments, and the exit of the oph- thalmic veins, and a recurrent branch from the lacrimal artery. This angle also shows the fronto-malar and the fronto-splienoi- dal sutures. What points does the superior internal angle present? The suture between the lacrimal, ethmoid, and frontal bones ; between the junction of the two latter bones the anterior eth- moidal foramen'^ for the anterior ethmoidal vessels and nasal nerve, and the j^osterior ethmoidal foramen^' for the posterior ethmoidal vessels. What points does the inferior external angle present? The splieno-maxiUari/ Jissure~^ transmitting the infra-orbital vessels and superior maxillary nerve, the ascending branches