Arterial Supply Flashcards
Long-Short: Internal carotid
Long: Middle, anterior cerebral aa.
Short: Posterior communicating a., Anterior choroidal a.
Long-Short: Anterior cerebral a.
Long: Cortical branches to medial aspect of frontal and parietal lobes, Arteries to corpus callosum
Short: Medial striate artery/Recurrent artery of Huebner
Long-short: Middle cerebral a.
Long: Cortical branches to frontal, parietal, temporal lobes
Short: Lenticulostriate aa.
Long-Short: Vertebral a.
Long: Posterior inferior cerebellar a., posterior spinal aa.
Short: Anterior spinal a.
Long-Short: Basillar a.
Long: Superior cerebellar a., Pontine aa. (Long), Anterior inferior cerebellar a.
Short: Pontine aa. (Short)
Long-Short: Posterior cerebral a.
Long: Cortical branches to occipital lobe and medial aspect of temporal lobe
Short: Posterior choroidal a., Aa. to thalamus (thalamoperforating)
Internal Carotid - Cervical Part
C1, from bifurcation to carotid canal
Internal Carotid - Petrous Part
C2: Within the carotid canal
Internal Carotid - Cavernous Part
C3 - Within the cavernous sinus
Internal Carotid - Supraclinoid/Intracranial/Cerebral Part
Pierces the dura mater
Ophthalmic aa supply the orbits and optic n.
Posterior communicating aa. anastomose with posterior cereberal aa.
Anterior choroidal aa. - Deep cortical structures
Anterior Cerebral Aa
Smaller of the two terminal branches of internal carotid
Linked by anterior communicating artery
Located within the longitudinal fissure
Form the callosomarginal and the pericallosal a.
Deep branches called medial striate aa. supply the internal capsule
Supplied by ACA
Cingulate gyrus, optic chiasm, medial aspect of frontal and parietal lobes including the motor and somatosensory areas of the cortex for lower limbs
ACA Infarct
Behavior changes (frontal lobe)
Contralateral leg and foot weakness (precentral gyrus)
Contralateral leg and foot sensory loss (postcentral gyrus)
Middle Cerebral Aa.
Larger of the two terminal branches of internal carotid aa.
Runs in lateral sulcus (Sylvian fissure)
Deep branches called lenticulostriate aa. supply the basal ganglia and internal capsule
Long/circumfrential branch bifurcates into superior and inferior divisions
Supplied by MCA
Super division - Lateral surface of frontal lobe and the anterior portion of the parietal lobe
Infer division - Medial and lateral temporal lobe, temporal pole and posterior portions of the parietal lobe
MCA Infarct
Right superior - Weakness and or sensory loss of left face, hand, arm and trunk
Left superior - Weakness and or sensory loss of right face, hand, arm and trunk; Broca’s aphasia
Right inferior - Sensory loss from left face, hand and arm (Left hemineglect)
Left inferior - Sensory loss from right face, hand and arm; Wernicke’s aphasia
Vertebral aa.
Pass through the transverse foramina of cervical vertebrae and enter cranial cavity through the foramen magnum, anastomose to form the basilar a.
Anterior spinal a.
Fuses with its partner to form a single long branch that runs within the anterior median fissure and supplies the anterior 2/3 of the cervical spinal cord and the anterior and middle medulla including the medullary pyramids
Posterior spinal aa.
Branch from the vertebral aa. or from the posterior inferior cerebellar aa.
Each descends near the dorsal roots and supplies post. 1/3rd of the cervical spinal cord and the posterior part of the caudal medulla
Posterior inferior cerebellar aa.
Branch from vertebral aa. to supply the inferior surface of the cerebellum , the lateral part of the rostral medulla and the choroid plexus of the 4th ventricle
Basillar Artery
Runs rostrally along the anterior surface of the pons, bifurcates to form posterior cerebral aa.
Anterior inferior cerebellar aa.
Supply the cerebellum and lateral part of the caudal pons
Superior cerebellar aa.
Supply the cerebeullum, lateral part of middle pons, and pineal gland
Short and long pontine aa.
Supply the pons
