Podcast
Questions and Answers
Which sinus does the superficial middle cerebral vein drain into?
Which sinus does the superficial middle cerebral vein drain into?
Which veins connect the superficial middle cerebral vein to the superior sagittal sinus and the transverse sinus respectively?
Which veins connect the superficial middle cerebral vein to the superior sagittal sinus and the transverse sinus respectively?
Where do the inferior cerebral veins drain blood from?
Where do the inferior cerebral veins drain blood from?
What forms the great cerebral vein (vein of Galen)?
What forms the great cerebral vein (vein of Galen)?
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Which veins receive blood from the medullary veins and drain into the dural venous sinuses?
Which veins receive blood from the medullary veins and drain into the dural venous sinuses?
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Which artery supplies the same side part of the brain hemispheres?
Which artery supplies the same side part of the brain hemispheres?
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Where does the internal carotid artery originate from?
Where does the internal carotid artery originate from?
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Which part of the internal carotid artery is described as having no branches?
Which part of the internal carotid artery is described as having no branches?
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Where does the internal carotid artery enter the skull?
Where does the internal carotid artery enter the skull?
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What does the internal carotid artery supply in addition to part of the brain hemispheres?
What does the internal carotid artery supply in addition to part of the brain hemispheres?
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Which part of the internal carotid artery is located inside the cavernous sinus?
Which part of the internal carotid artery is located inside the cavernous sinus?
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At which level does the internal carotid artery bifurcate from the common carotid artery?
At which level does the internal carotid artery bifurcate from the common carotid artery?
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Which structure contains baroreceptors at its bifurcation?
Which structure contains baroreceptors at its bifurcation?
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What does the internal carotid artery form on the inferior surface of the brain?
What does the internal carotid artery form on the inferior surface of the brain?
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Which part of the internal carotid artery divides into its terminal branches when it reaches the anterior perforated substance?
Which part of the internal carotid artery divides into its terminal branches when it reaches the anterior perforated substance?
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Which artery supplies blood to the eye?
Which artery supplies blood to the eye?
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Where do the vertebral arteries originate?
Where do the vertebral arteries originate?
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Which part of the internal carotid artery passes near the cavernous sinus?
Which part of the internal carotid artery passes near the cavernous sinus?
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What is an aneurysm?
What is an aneurysm?
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What is the function of the Circle of Willis?
What is the function of the Circle of Willis?
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What causes strokes?
What causes strokes?
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Where does the basilar artery ascend along?
Where does the basilar artery ascend along?
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Which arteries supply the inferior surface of the cerebellum?
Which arteries supply the inferior surface of the cerebellum?
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What does MCA stand for in relation to arteries?
What does MCA stand for in relation to arteries?
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What can rupture and cause subarachnoid or intracerebral hemorrhages?
What can rupture and cause subarachnoid or intracerebral hemorrhages?
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Study Notes
- The middle cerebral artery (MCA) is a major artery that supplies blood to the brain, originating from the internal carotid artery
- The internal carotid artery enters the skull through the carotid canal, which is located on the inferior surface of the temporal bone
- The petrous part of the internal carotid artery passes near the cavernous sinus in the carotid canal
- The cavernous part of the internal carotid artery enters the subarachnoid space through the dura
- The MCA gives off several branches, including the ophthalmic artery, which supplies blood to the eye, and the anterior communicating artery, which connects the two hemispheres
- The vertebral arteries also supply blood to the brain, originating from the first part of each subclavian artery in the lower neck
- The vertebral arteries join to form the basilar artery at the pontomedullary junction, which then ascends along the ventral midline of the pons
- The basilar artery gives off several branches, including the anterior inferior cerebellar arteries, which supply the inferior surface of the cerebellum, and the superior cerebellar arteries, which supply the superior cerebellum and part of the rostral pons
- The Circle of Willis is an interconnecting system of vessels that ensures blood brought by the internal carotid and basilar arteries is distributed with equal pressure to various parts of the brain
- Strokes are cerebrovascular accidents caused by interruption of blood flow to the brain or brainstem, resulting in neurological impairment lasting more than 24 hours
- Aneurysms are abnormal balloon-like swellings of arteries that can rupture and cause subarachnoid or intracerebral hemorrhages, with 90% of cerebral aneurysms occurring in the Circle of Willis.
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Description
Test your knowledge of the arterial blood supply to the human brain with this quiz. Learn about the vascular sources and circulation within the cranial cavity.
