Blood Supply Flashcards
Describe the Circle of Willis
Vertebral arteries come to form the basilar artery, it will then divide into the PCA. The Internal carotid artery will come up and split into the ACA and the PCA. The two systems communicate by the posterior communicating artery. The ACA can communicate through the Anterior communicating artery
Describe the branches of the Basilar Artery and what they supply
Pontine arteries supply the pons, the Anterior inferior cerebellar artery and the superior cerebellar artery
Describe the branches of the vertebral arteries
Anterior and posterior spinal artery to supply the spinal chord. There is also the posterior inferior cerebellar artery to supply that region of the cerebellum
Describe MCA and what it supplies
Will have a lateral course as it exits at the lateral sulcus. Will supply the Sensory and the Motor cortex (not leg region). Areas of language (Broccas or Wernikes) and the occipito-parietal regions.
Describe PCA and what it supplies
Mostly the posterior occipital regions which is mainly the visual cortex
Describe ACA and what it supplies
Is in the medial region of the brain, will run over the corpus collosum and run posterior on the top of it until the lateral fissure. Will supply the leg region of the motor and sensory cortex.
Branches of the MCA supply?
The Basal ganglia and the internal capsule
Branches of the ACA supply?
Will supply anterior hypothalamus and the optic chiasm
Branches of the PCA supply?
Will supply the posterior hypothalamus, midbrain and the thalamus
Supply of the Midbrain
PCA and some from the superior cerebella artery
Supply of the Pons
Pontine arteries
Supply of the Medulla
The medial region is supplied by the ASA, the posterior lateral region is supplied the PICA. The anterior lateral region is supplied by the Vertebral arteries
