220 



THE HEAD AND NECK 



spending to the branches of the external carotid artery which 

 are found in the scalp, and by the supra-orbital and frontal 

 veins which unite to form the angular vein (p. 175). 



FIG. 67. Diagrammatic Representation of a Frontal Section through the 

 Scalp, Cranium, Meninges, and Cortex Cerebri (modified from Cunningham). 



1. Integument. 



2. Artery in superficial fascia. 



3. Vein in superficial fascia. 



4. Diploic vein, connecting veins of scalp 



with veins of dura mater. 



5. Vein in dura mater. 



6. Arachnoid. 



7. Pia mater. 



8. Arachnoidal granulation. 



9. Cortex cerebri. 



TO. Superior sagittal sinus. 



11. Vein in pia mater. 



12. Sub-arachnoid space. 



13. Epicranial aponeurosis. 



14. Lax connective tissue. 



15. Pericranium. 



16. Outer table of cranium. 



17. Diploe. 



1 8. Anastomosis between arteries of scalp 



and those of dura mater. 



19. Inner table of cranium. 



20. Dura mater. 



21. Parasinoidal sinus. 



22. Cerebral vein opening into superior 



sagittal sinus. 



2. The venous blood may return along the parietal emissary 

 vein into the superior sagittal (longitudinal) sinus, or along the 

 mastoid and condyloid emissary veins into the transverse (lateral) 

 sinus. Further, the supra - orbital veins communicate with 



