258 INTERNAL MAXILLARY ARTERY. 



E. The Vertebra; of the Neck, cut to show the passage of the artery, 



encased in the bones. 



F. F. The Skull-cap, sawn through exactly in the length of the longitudi- 



nal sinus. 



G. The Falx, which divides the hemispheres of the Brain. 

 H. The longitudinal Sinus. 



I. The Fourth Sinus, returning the blood from the lower sinus of the falx, 



and from the vena galeni. 

 K. Right Lateral Sinus. 

 L. The Tentorium, which covers the cerebellum, and supports the posterior 



lobes of the cerebrum. 



Arteries. 



1. The Common Carotid Artery. 



2. The Internal Carotid Artery.* 



3. The External Carotid Artery. 



4. The Vertebral Artery ; the processes of the vertebrae being cut away. 



5. The last and violent turn of the Vertebral Artery, before entering the 

 foramen magnum of the occipital bone. 



6. The violent contortions of the Internal Carotid Artery, before entering 

 the skull. 



7. The point of the Internal Carotid Artery, where, after making its turns 

 in its passage through the bone, it appears by the side of the sella tur- 

 cica. See Plate at page 252. 



8. The Ophthalmic Artery, derived from the carotid. It is this artery 



which is seen to inosculate with the Facial Artery, in the preceding 

 Plate, at page 252. 



9. The Thyroid Artery. 

 10. The Lingual Artery. 



II. The Facial Artery, cut short ; it is seen in the Plate, at page 252, Fig. 

 2, passing over the jaw. 



12. The continued Trunk of the External Carotid Artery ; it is about to 

 divide into the temporal and internal maxillary arteries. See the pre- 

 ceding Plate (11.) 



13. The Temporal Artery, cut short. 



14. Internal Maxillary Artery. 



15. That Branch of the Internal Maxillary Artery, which passes into the 



lower jaw. 



* Internal Carotid. In Dr. Hooper's collection of preparations, there is a 

 curious example of the ulceration of this artery. A man intending to destroy 

 himself, attempted to swallow pins tied together; they stuck in the pharj'nx, 

 and in time penetrated to this artery, which suddenly cut him off. 



