Vascular Neurosurgery/100% ACCURATE
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Segments of ICA ANS - C1: Cervical C2: Petrous C3: Lacerum C4: Cavernous C5: Clinoid C6: Ophthalmic C7: Communicating C1 – Cervical ANS - Starts off of Aortic arch, ends in carotid canal ... in Petrous part of Temporal bone. Branches: none Posterolateral to ECA. Travels with IJV, Superior Cervical Ganglia & Lymph nodes. C2 Petrous ANS - Located in carotid canal in temporal bone. Vertical Segment Anterior to IJV ~10mm Genu below & anterior to cochlea Horizontal segment exits at Petrous Apex above lacerum ~20mm Branches: Vidian a. Artery of pterygoid canal (anastomoses with ECA) carticotympanic a. C3 Lacerum ANS - Exits carotid canal and courses above (not through) the foramen lacerum. C4 Cavernous ANS - Starts at superior margin of petro-lingual ligament. Long vertical portion Long Horizontal portion short vertical portion. Exits through dural ring on superior wall of cavernous sinus. CN III, IV, VI, trigeminal ganglion lateral to cavernous ICA sphenoid sinus is medial V1 & V2 inferolateral to cavernous ICA [Show More]
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