A system of human anatomy, general and special . sses in the firstinstance horizontally forwards, behindthe neck of the lower jaw; next,curves around the lower border of theexternal pterygoid muscle near its ori-gin, and ascends obliquely forwardsupon the outer side of that muscle; itthen passes between the two heads ofthe external pterygoid, and enters thepterygo-maxillary fossa. Occasion-ally it passes between the two ptery-goid muscles, without appearing onthe outer surface of the external pterygoid. In consideration ofits course, this artery may be divided into three portions: maxillary,pt
A system of human anatomy, general and special . sses in the firstinstance horizontally forwards, behindthe neck of the lower jaw; next,curves around the lower border of theexternal pterygoid muscle near its ori-gin, and ascends obliquely forwardsupon the outer side of that muscle; itthen passes between the two heads ofthe external pterygoid, and enters thepterygo-maxillary fossa. Occasion-ally it passes between the two ptery-goid muscles, without appearing onthe outer surface of the external pterygoid. In consideration ofits course, this artery may be divided into three portions: maxillary,pterygoid, and spheno-maxillary. Relations. — The maxillary portion is situated between the ramusof the jaw and the internal lateral ligament, lying parallel with theauricular nerve; the pterygoid portion, between the external ptery-goid muscle, and the masseter and temporal muscle. The pterygo-maxillary portion lies between the two heads of the external ptery-goid muscle, and, in the spheno-maxillary fossa, is in relation withMeckels Branches. Maxillary ,Inferior dental,Arteria meningea media,Arteria meningea parva. Pterygoid temporal branches,External pterygoid,Internal pterygoid,Masseteric,Buccal. * 1. The external carotid artery. 2. The trunk of the transverse facial artery. 3,4. Thetwo terminal branches of the external carotid. 3. The temporal artery ; and 4. The in-ternal maxillary, the first or maxillary portion of its course : the limit of this portion ismarked by an arrow. 5. The second, or pterygoid portion, of the artery ; the limits arebounded by the arrows. 6. The third or pterygo-maxillary portion. The branches of themaxillary portion are, 7. A tympanic branch. 8. The arteria meningea magna. 9. Thearteria meningea parva. 10. The inferior dental artery. The branches of the second por-tion are wholly muscular, the ascending ones being distributed to the temporal, and thedescending to the four other muscles of the inter-maxilla
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectanatomy, bookyear1847
