. Cunningham's Text-book of anatomy. Anatomy. 138 OSTEOLOGY. below in the hamulus pterygoideus (pterygoid hooklet), which, reaching a lower level than the lateral plate, curves backwards and laterally, furnishing a groove in which the tendon of the tensor veli palatini muscle glides; superiorly, the sharp posterior margin of the medial plate bifurcates, so as to enclose the shallow scaphoid fossa from which the tensor veli palatini muscle arises, and wherein may occasionally be seen the inferior aperture of the foramen Vesalii. To the medial edge of this fossa, as well as to the posterior bord
. Cunningham's Text-book of anatomy. Anatomy. 138 OSTEOLOGY. below in the hamulus pterygoideus (pterygoid hooklet), which, reaching a lower level than the lateral plate, curves backwards and laterally, furnishing a groove in which the tendon of the tensor veli palatini muscle glides; superiorly, the sharp posterior margin of the medial plate bifurcates, so as to enclose the shallow scaphoid fossa from which the tensor veli palatini muscle arises, and wherein may occasionally be seen the inferior aperture of the foramen Vesalii. To the medial edge of this fossa, as well as to the posterior border of the medial pterygoid plate, the pharyngo- basilar fascia (pharyngeal aponeurosis) is attached. Here, too, the cartilage of the auditory tube is supported on a slight projection, and the pharyngo -palatums muscle receives an origin, whilst the superior con- strictor of the pharynx arises from the inferior third of the same border and from the pterygoid booklet. Superiorly and medially the medial plate forms an incurved lamina of bone, the processus vaginalis (vaginal process), which is applied to the under surface of the lateral aspect of the body reaching medially, towards the root of the rostrum, from which, however, it is separated by a groove, in which, in the articulated skull, the ala of the vomer is lodged. The angle formed by the vaginal process and the medial edge of the scaphoid fossa forms a projection called the pterygoid tubercle, immediately above which is the posterior aperture of the canalis pterygoideus, through which the nerve and artery of the canal ( Vidian) are transmitted. On its under surface the vaginal process displays a groove (sulcus pterygopalatinus) which in the articulated skull is converted into the pharyngeal canal by its union with the palate bone. In front, at its root, the pterygoid process displays a broad smooth surface (facies sphenomaxillaris), which is confluent above with the root of the great wing around the foramen rotundum, a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
