A system of human anatomy, general and special . d the external pterygoid muscle. The sig-moid notch is crossed by the masseteric artery and nerve. The internal surface of the ramus is marked near its centre by alarge oblique foramen, the inferior dental, for the entrance of the in-ferior dental artery and nerve into the dental canal. Bounding thisopening is a sharp margin, to which is attached the internal lateral * The lower jaw. 1. The body. 2. The ramus. 3. The symphysis. 4. The fossafor the depressor labii inferioris muscle. 5. The mental foramen. 6. The external ob-lique ridge. 7. The gr
A system of human anatomy, general and special . d the external pterygoid muscle. The sig-moid notch is crossed by the masseteric artery and nerve. The internal surface of the ramus is marked near its centre by alarge oblique foramen, the inferior dental, for the entrance of the in-ferior dental artery and nerve into the dental canal. Bounding thisopening is a sharp margin, to which is attached the internal lateral * The lower jaw. 1. The body. 2. The ramus. 3. The symphysis. 4. The fossafor the depressor labii inferioris muscle. 5. The mental foramen. 6. The external ob-lique ridge. 7. The groove for the facial artery ; the situation of the groove is marked bya notch in tin bone a little in front of the number. 8. The angle. 9. The extremity ofthe ridge. 10. The coronoid process. 11. The condyle. 12. The sigmoidnotch. 13. The inferior dental foramen. 14. The mylo-hyoidean groove. 15. The al-veolar process, i. The middle and lateral incisor tooth of one side. c. The canine The bicuspides. m. The three gg TABLE OF DEVELOPEMENTS, ARTICULATIONS, ETC. ligament, and passing downwards from the opening a narrow groove,which lodges the mylo-hyoidean nerve with a small artery and the uneven surface above, and in front of the inferior dental fora-men, is attached the temporal muscle, and to that below it the internalpterygoid. The internal surface of the neck of the condyle gives at-tachment to the external pterygoid muscle; and the angle to the stylo-maxillary ligament. Developement.—By tiro centres ; one for each lateral half, the twosides meeting at the symphysis, where they become united. Thelower jaw is the earliest of the bones of the skeleton to exhibit ossi-fication, with the exception of the clavicle ; ossific union of the sym-physis takes place during the first year. Articulations.—With the glenoid fossa? of the two temporal bones,through the medium of a fibro-cartilage. Attachment of Muscles.—To fourteen pairs ; by the
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectanatomy, bookyear1847
