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neuro blood supply
neuroanatomy- blood supply
| Question | Answer |
|---|---|
| internal carotid artery | lies within the cavernous sinus |
| internal carotid artery | supplies tributaries to the dura, hypophysis, tympanic cavity and trigeminal ganglion |
| internal carotid artery | gives branches to the optic nerve, optic chiasm, hypothalamus, and genu of the internal capsule |
| central artery of retina | branch of the ophthalmic artery, occlusion results in blindness, supplies inner 5 layers of retina |
| posterior communicating artery | supplies optic chiasm nad tract, hypothalamus, subthalamus, and anterior half of the ventral portion of thalamus; arises from carotid siphon and joins posterior cerebral |
| anterior choroidal | arises from the internal carotid; supplies the choriod plexus of the temporal horn of the lateral ventricle, hippocampus, amygdale, optic tract, lateral geniculate body, globus pallidus |
| anterior cerebral artery | gives direct branches to optic chiasm; supplies the medial surface of the frontal and parietal lobes and corpus callosum: supplies leg and foot area of the motor and sensory cortices |
| anterior communicating artery | connects two anterior cerebral arteries |
| middle cerebral artery | supplies lateral convexity of the hemisphere and underlying insula; supplies trunk, arm, and face area of the motor and sensory cortices; supplies Broca’s and Wernicke’s |
| vertebral arteries | is a branch of the subclavian artery |
| vertebral arteries | joins its opposite partner to form the basilar |
| posterior inferior cerebellar artery | gives rise to posterior spinal artery; supplies the dorsolateral zone of the medulla; supplies the inferior surface of the cerebellum and the choriod plexus of the 4th ventricle; supplies CN IX and X |
| basilar artery | formed by two vertebral arteries |
| pontine arteries | supply the corticospinal tracts and CNVI |
| labrynthine artery | perfuses the cochlea and the vestibular apparatus |
| anterior inferior cerebellar artery | supplies the inferior surface of the cerebellum; supplies the facial nucleus,spinal trigeminal nucleas and tract, vestibular nuclei, cochlear nuclei, spinothalamic tract |
| superior cerebellar artery | supplies the superior surface of the cerebellum and the cerebellar nuclei; supplies the rostal and lateral pons |
| posterior cerebral artery | formed by bifurcation of the basilar artery; provides major blood supply to midbrain; supplies occipital lobe, visual cortex and inferior surface of the temporal lobe |
| arterial circle of willis | formed by the anterior communicating, anterior cerebral, and internal carotid, posterior communicating, and posterior cerebral arteries |
| arterial circle of willis | gives off penetrating arteries to supply the ventral diencephalons and the midbrain |
| meningial arteries | supply the intracranial dura |
| meningial arteries | usually arise from the branches of the external carotid artery |
| anterior meningial arteries | arise from the anterior and posterior ethmoidal arteries; supply the dura of the anterior cranial fossa |
| middle meningial arthery | branch of the maxillary artery; enters cranium via foramen spinosum; supplies most of the dura; laceration results in epidural hematoma |
| posterior meningeal arteries | are branches of ascending pharyngeal, vertebral, and occipital arteries; supply the dura of the posterior cranial fossa |
| superficial cerebral viens | devoid of valves and lie along surface sulci |
| superficial cerebral viens | arise form the cortex and subcortical medullary substance and terminate in the dural sinuses |
| superficial cerebral viens | lie superficial to arteries and are considered meningeal veins |
| superior cerebral veins | drain into the superior sagittal sinus; laceration results in subdural hematoma |
| middle cerebral vein | overlies lateral sulcus and drains into cavernous sinus; communicates with the transverse sinus |
| inferior cerebral veins | drain the inferior lateral and basal surface of the hemisphere |
| medial cerebral veins | drain medial surface of hemisphere, including the corpus callosum, into the inferior sagittal sinus |
| basal vein | drains the orbital surface of the frontal love, insula, and sorpus stiratum; encircles the brainstem and drains into the great vein of galen |
| internal cerebral veins | paired parallel vessles situated lateral to the midline and on the roof of the 3rd ventricle |
| internal cerebral veins | join the great vein of galen |
| great cerebral vein of galen | located below the splenium of the corpus callosum in transverse cerebral fissure |
| great cerebral vein of galen | receives two internal cerebral veins, two basal veins, two occipital veins and the posterior callosal vein |
| great cerebral vein of galen | joins the inferior sagittal sinus and the straight sinus |
| venous dural sinuses | are endothelial lined valveless channels whose walls are formed by two layers of dura matter |
| venous dural sinuses | collect blood from the superficial and deep cerebral veins and the calvarium and represent the major drainage pathway of the cranial cavity |
| venous dural sinuses | receive arachnoid granulations and absorb CSF |
| superior sagittal sinus | extends from the foramen cecum to the internal occipital protuberance and usually terminates in the right transverse sinus; communicates with the nasal emissary veins; receives superficial cerebral veins, diploic veins, and parietal emissary veins |
| inferior sagittal sinus | courses in the inferior free edge of the falx cerebri; joins the great cerebral vein to form the straight sinus |
| straight sinus | is formed by the great cerebral vein and the inferior sagittal sinus; terminates at the internal occipital protuberance and usually drains into the left transverse sinus; drains the superior surface of the cerebellum |
| left and right transverse sinuses | originate at the confluence of the sinuses and coutse anterolaterally along the edge of the entorium cerebelli to become the sigmoid sinus; receives venous blood from the termporal and occipital lobes |
| confluence of the sinuses | lies at the internal occipital protuberance; is formed by the unsion of the superior sagittal, straight, and transverse sinuses |
| sigmoid sinus | is a continuation of the transverse sinus; passes inferiorly and medially into the jugular foramen |
| spenoparietal sinus | lies along the curve of the lesser wing of the sphenoid bone and drains into the cavernous sinus |
| superior petrosal sinus | extends from the cavernous sinus to the sigmoid sinus; receives tributaries from the pons, medulla, cerebellum, and inner ear |
| inferior petrosal sinus | passes between glossopharyngeal (9) and vagal nerves and drains into the jugular bulb; receives major venous drainage from the inferior portion of the cerebellum; drains the cavernous sinus and clival plexus into the internal jugular vein |
| cavernous sinus | surrounds sella turcica and the body of the sphenoid bone; contains within the simus, the internal carotid artery, sympathetic plexus, and abducent nerve; contains within the lateral wall of the sinus, the CN III, IV, V1, V2; receives blood from |
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