Section I: General Concepts.-Chapter 1. A Brief Historical Review of Neurovascular Embryology -- Chapter 2. Embryological Development of the Human Cranio-Facial Arteries -- Section II: Intradural Arterial System.-Chapter 3. Embryological Development of the Internal Carotid Artery -- Chapter 4. Segmental Classifications of the Internal Carotid Artery -- Chapter 5. Branches and Variations of the Internal Carotid Artery -- Chapter 6. Segmental Agenesis of the Internal Carotid Artery -- Chapter 7. Embryology and Variations of the Anterior Choroidal Artery -- Chapter 8. Embryology, Anatomy, and Variations of the Anterior Cerebral Artery -- Chapter 9. Anatomy and Variations of the Anterior Communicating Artery -- Chapter 10. Embryology and Variations of the Recurrent Artery of Heubner -- Chapter 11. Embryology and Variations of the Posterior Choroidal Artery -- Chapter 12. Cortical and Perforating Branches of the Middle Cerebral Artery -- Chapter 13. Embryology and Anatomy of the Posterior Communicating Artery and Basilar -- Chapter 14. Embryology and Anatomy of the Posterior Cerebral Artery -- Chapter 15. Perforating Branches of the Posterior Cerebral Artery -- Chapter 16. Embryology and Anatomy of the Vertebral Artery -- Chapter 17. Anatomy and Variations of the Posterior Inferior Cerebellar Artery -- Chapter 18. Embryology and Variations of the Anterior Inferior Cerebellar Artery -- Chapter 19. Embryology and Variations of Superior Cerebellar Artery -- Chapter 20. Perforating Branches of the Basilar and Posterior Communicating Arteries -- Section III: Arterial System of the Dura and Supply of the Cranial Nerves.-Chapter 21. Anatomy, Embryology and Variations of the Middle Meningeal Artery -- Chapter 22. Dural Branches of the Internal Maxillary Artery -- Chapter 23. Dural Branches of the Internal Carotid Artery -- Chapter 24. Dural Branches of the Anterior and Posterior Cerebral Arteries -- Chapter 25. Dural Branches of the Ophthalmic Artery -- Chapter 26. Dural Branches of the Cerebellar Arteries -- Chapter 27. Dural Branches of the Vertebral Artery -- Chapter 28. Dural Branches of the Occipital Artery -- Chapter 29. Dural Branches of the Ascending Pharyngeal Artery -- Chapter 30. Arterial Supply of the Cranial Nerves -- Section IV: Arterial Systems of the Skull Base.-Chapter 31. Arterial Supply of the Middle Ear -- Chapter 32. Embryological Development of the Hyo-Stapedial System -- Chapter 33. Intra-Tympanic Flow of the Internal Carotid Artery -- Chapter 34. Embryology and Anatomy of the Internal Maxillary Artery -- Chapter 35. Embryology and Variations of the Ophthalmic Artery -- Chapter 36. Anatomy and Variations of the Superficial Temporal Artery -- Chapter 37. Embryology and Variations of the Occipital Artery -- Chapter 38. Embryology and Variations of the Ascending Pharyngeal Artery -- Chapter 39. Anatomy and Variations of the Posterior Auricular Artery -- Section V: Arterial Systems of the Cranio-Cervical Junction.-Chapter 40. Anastomotic network of the Cranio-Cervical Junction -- Chapter 41. Carotido-Vertebral Anastomoses.