Circle of Willis Flashcards
r. and l. Vertebral Arteries
Run from the vertebra to the brain. Create an anastomose before branching again.
r. and l. Internal carotid arteries
located in main circle of willis. Connect with the middle cerebral arteries and posterior communicating arteries.
Basilar artery
Large artery sitting in midline of brain/body. Directly connected to the pontine arteries laterally, anterior inferior cerebellar arteries inferiorly, and superior cerebellar arteries superiorly
r. and l. inferior anterior cerebellar arteries
Located as branches off the vertebral anastomose between the vertebral arteries and the basilar artery.
r. and l. pontine arteries
Small arteries branching off the main basilar artery laterally
r. and l. superior cerebellar arteries
First branch of arteries superior to the basilar artery. Supply blood to the superior cerebellum.
r. and l. posterior cerebral arteries
Second branch of arteries superior to the basilar arteries and the superior cerebellar arteries. Supply blood to the posterior cerebrum.
r. and l. anterior cerebral arteries
Arteries that branch off the middle cerebral arteries and vascularize the anterior portion of the brain.
r. and l. middle cerebral arteries
Arteries that connect with the posterior communicating arteries posteriorly, the internal carotid arteries medially, and the anterior cerebral arteries superiorly. Vascularize the middle portion of the cerebrum.
r. and l. posterior communicating arteries
Arteries that connect the posterior cerebral arteries to the middle cerebral arteries.
superior sagittal sinus
Sinus of the brain that runs along the longitudinal fissure of the brain back to the confluence of sinuses
confluence of sinuses
collection area of the deoxygenated blood from the brain.
r. and l. transverse sinuses
Sinuses that flow from the confluence of sinuses around the cerebellum to the jugular veins.
