cerebrovascular gross anatomy Flashcards
name the vessels of anterior circulation of cerebrovascular circulation
common carotid artery
internal carotid artery
external carotid artery
what is the right CCA a branch of
right innominate
what is the left CCA a branch of
aortic arch
describe the anatomy of the ICA
origin from CCA
travels to skull base w/o branching
has two intracranial branches
has low resistant waveform
the ICA terminates into what
the TICA :)
ACA and MCA
the 2 intracranial branches include
ophthalmic artery- originates at curve of the carotid siphon
posterior communicating artery
anatomy of the ECA
3
origin from CCA
has 8 branches - 1st is superior thyroid a
high resistance waveform
what are components of posterior circulation of crebrovascular system
vertebral arteries
basilar artery
describe vertebral a. anatomy
first branch of the subclavian
right is usually smaller than the left
unite after entering skull to form the basilar artery
so they converge rather than bifurcate
Describe anatomy of basilar artery
formed by confluence of vertebral arteries
divides into posterior cerebral arteries
name the two ophthalmic artery branches
supraorbital - joins ECA branches
frontal artery - joins ECA branches
what is the largest intra-arterial connection in the body
circle of Willis
3 IMPORTANT collateral pathways of cerebrovascular system
ECA-ICA
(conn. w/ orbital and ophthalmic arteries)
Occipital b. of ECA - Atlantic b. of Vert.
cervical a. b. of Subclav. / lower vertebral
