Lesson 1C - 2 Flashcards
(24 cards)
ECA branches from inferior to inferior
Superior thyroid Ascending Pharyngeal Lingual Facial Occipital Posterior auricular Maxillary Superficial temporal
Sally Ann Likes Flirting On Peterboroughs Main Street
What do collateral vessels do
Reroute blood flow
The most important ECA collaterals are categorized by what
Those that communicate with the opthalmic or vertebral artery
MOST IMPORTANT ECA COLLATERALS (4)
Occipital
Facial
Superficial temporal
Internal maxillary arteries
The portion of the ICA that we scan
Cervical (extracranial)
The ICA is directed
Laterally, dorsally and upwards in the neck
The ICA has what type of resistant flow pattern
Low
What is a normal variant of the ICA
Coils
What can coils lead to over time
Kinks – HBP – stenosis
The ICA supplies most of the ____ circulation of the brain
anterior
4 portions of the ICA
Cervical
Petrous
Cavernous
Supraclinoid
Where is the petrous portion of ICA
Pass through temporal bone at petrous bone
Describe the cavernous portion of the ICA
Tortuous portion where the opthalamic artery branches
Where is the supraclinoid portion
Where branching of the intracranial ICA occurs to form circle of willis
The first intracranial branch is the
Opthalmic artery
The ICA terminates at the
Anterior cerebral artery
Vertebral arteries supply ____ circulation of the brain
Posteriort
Where do the vertebrals enter the skull
Transverse foramena
Vertebral arteries give off ___ and ___ branches
Muscular and spinal
The vertebrals leave the cervical spine at the ______ and then loop anteriorly to enter the_____
Atlanto-occipital interspace
Foramen magnum
The vertebral arteries unite at the _____ to form the _______
Pontomedullary junction to form the basiliar artery
The vertebral vein is formed from numerous small tributaries which spring from the
Vertebral venous plexus
The vertebral vein travels along side the
Vertebral artery
The vertebral bein empties into the ____ where _____ are located
Innominate vein where valves are located
