Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Plural form of
sphenoid .
Etymologies
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Examples
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The great wings, or ali-sphenoids, are two strong processes of bone, which arise from the sides of the body, and are curved upward, lateralward, and backward; the posterior part of each projects as a triangular process which fits into the angle between the squama and the petrous portion of the temporal and presents at its apex a downwardly directed process, the spina angularis (sphenoidal spine).
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The small wings or orbito-sphenoids are two thin triangular plates, which arise from the upper and anterior parts of the body, and, projecting lateralward, end in sharp points (Fig. 145).
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The first ossific nuclei are those for the great wings (ali-sphenoids) 33.
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The most anterior had the pre-sphenoid for its body, the orbito-sphenoids for its neural processes, and the arch was completed above by the frontals (frontal segment).
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There is no parasphenoid in the mammal*; and, instead, a complete series of ossifications, the median -, basi -, and pre-sphenoids, and the lateral ali - and orbito-sphenoids occur.
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Similarly, the basi-sphenoids, ali-sphenoids, and parietals formed a second arch
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A pair of parietals (pa.) come above the ali-sphenoids, and a pair of frontals (f.) above the orbito-sphenoids.
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Similarly the ali-sphenoids (a.s.), are wings to the basi -, and the orbito-sphenoids (o.s.), to the pre-sphenoid bone (p. sp.).
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Describe, as accurately as possible, the position of palatine bones, pterygoids, the ethmoid bone, the pre - and basi-sphenoids, in the dog's skull.
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(exoccipitals), the alæ of the two sphenoids (alisphenoids and orbitosphenoids) and the lateral surfaces of the vomer.
Form and Function A Contribution to the History of Animal Morphology
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