Applied anatomy and oral surgery for dental students . nasi, angular. The branches of the internal maxillary artery are asfollows: {a) Maxillary portion: Tympanic, middlemeningeal, small meningeal, and inferior dental. (6)Pterygoid portion: Deep temporal, pterygoid, masseteric,and buccal. (c) Sphenomaxillary portion: Alveolarto the upper teeth, infra-orbital, descending palatine,vidian, pterygopalatine, and nasopalatine. The vertebral arteries are given off from the subclavianarteries, and pass upward one on either side of the neck,through the foramina in the transverse processes of thecervica
Applied anatomy and oral surgery for dental students . nasi, angular. The branches of the internal maxillary artery are asfollows: {a) Maxillary portion: Tympanic, middlemeningeal, small meningeal, and inferior dental. (6)Pterygoid portion: Deep temporal, pterygoid, masseteric,and buccal. (c) Sphenomaxillary portion: Alveolarto the upper teeth, infra-orbital, descending palatine,vidian, pterygopalatine, and nasopalatine. The vertebral arteries are given off from the subclavianarteries, and pass upward one on either side of the neck,through the foramina in the transverse processes of thecervical vertebrae, entering the skull through the foramenmagnum. The arteries of the two sides join at theposterior inferior extremity of the pons Varolii to formthe basilar. The basilar artery at the anterior extremity of thepons divides into the posterior cerebral arteries. These BLOOD-VESSELS 69 anastomose with the anterior cerebral branches of theinternal carotid arteries through the posterior com-municating arteries. The circle of Willis is completed. Fig. 20.—Diagram of the circle of Willis: A, Basilar artery; B, posteriorcerebral; C, posterior communicating; D, internal carotid; F, anterior cerebral;G, anterior communicating (Campbell). in front by the anterior communicating artery, whichjoins the two anterior cerebral arteries (Fig. 20). Veins of the Head The veins of the head may be divided into externaland intracranial. Practically all the venous blood from the head isconveyed by the internal and external jugular veins. The following table gives the principal veins of thehead and their tributaries: 70 APPLIED ANATOMY EXTERNAL VEINS. Temporal. It- -n T , •„ r Temporomaxillary. 1 ^ , . , r- i , • Internal maxillary. J _ . , Facial. ~) Anterior division of )- Common facial. temporomaxillary. J Lingual. Pharyngeal. Superior thyroid. Middle thyroid. Occipital. Internal jugular. The internal jugular vein is formed by the union ofthe lateral and inferior petrosal
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Keywords: ., bookauthoriv, bookcentury1900, bookdecade1910, booksubjectanatomy
