Human Brain Arterial Blood Supply Quiz
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Questions and Answers

Which sinus does the superficial middle cerebral vein drain into?

  • Cavernous sinus (correct)
  • Superior sagittal sinus
  • Transverse sinus
  • Sphenopalatine sinus
  • Which veins connect the superficial middle cerebral vein to the superior sagittal sinus and the transverse sinus respectively?

  • Superficial anastomotic vein and Deep anastomotic vein
  • Trolard vein and Labbé vein (correct)
  • Cerebral anastomotic vein and Venous anastomotic vein
  • Middle anastomotic vein and Inferior anastomotic vein
  • Where do the inferior cerebral veins drain blood from?

  • Inferior aspect of each cerebral hemisphere (correct)
  • Superficial surface of each cerebral hemisphere
  • Medullary area of the brain
  • Subependymal veins
  • What forms the great cerebral vein (vein of Galen)?

    <p>Union of 2 deep veins: internal cerebral v.v. under corpus callosum (A)</p> Signup and view all the answers

    Which veins receive blood from the medullary veins and drain into the dural venous sinuses?

    <p>Subependymal veins (A)</p> Signup and view all the answers

    Which artery supplies the same side part of the brain hemispheres?

    <p>Internal carotid artery (B)</p> Signup and view all the answers

    Where does the internal carotid artery originate from?

    <p>Bifurcation of common carotid artery (C)</p> Signup and view all the answers

    Which part of the internal carotid artery is described as having no branches?

    <p>Cervical part (D)</p> Signup and view all the answers

    Where does the internal carotid artery enter the skull?

    <p>Carotid canal (A)</p> Signup and view all the answers

    What does the internal carotid artery supply in addition to part of the brain hemispheres?

    <p>Eye &amp; accessory structures (C)</p> Signup and view all the answers

    Which part of the internal carotid artery is located inside the cavernous sinus?

    <p>Cavernous part (A)</p> Signup and view all the answers

    At which level does the internal carotid artery bifurcate from the common carotid artery?

    <p>Upper level of thyroid cartilage, C4 (C)</p> Signup and view all the answers

    Which structure contains baroreceptors at its bifurcation?

    <p>Carotid sinus (D)</p> Signup and view all the answers

    What does the internal carotid artery form on the inferior surface of the brain?

    <p>Cerebral arterial circle (Circle of Willis) (D)</p> Signup and view all the answers

    Which part of the internal carotid artery divides into its terminal branches when it reaches the anterior perforated substance?

    <p>Cerebral part (B)</p> Signup and view all the answers

    Which artery supplies blood to the eye?

    <p>Ophthalmic artery (D)</p> Signup and view all the answers

    Where do the vertebral arteries originate?

    <p>From the subclavian artery (C)</p> Signup and view all the answers

    Which part of the internal carotid artery passes near the cavernous sinus?

    <p>Petrous part (A)</p> Signup and view all the answers

    What is an aneurysm?

    <p>Abnormal swelling of an artery (A)</p> Signup and view all the answers

    What is the function of the Circle of Willis?

    <p>Distribute blood with equal pressure to various parts of the brain (C)</p> Signup and view all the answers

    What causes strokes?

    <p>Interruption of blood flow to the brain or brainstem (D)</p> Signup and view all the answers

    Where does the basilar artery ascend along?

    <p>Ventral midline of the pons (C)</p> Signup and view all the answers

    Which arteries supply the inferior surface of the cerebellum?

    <p>Anterior inferior cerebellar arteries (A)</p> Signup and view all the answers

    What does MCA stand for in relation to arteries?

    <p>Middle Cerebral Artery (D)</p> Signup and view all the answers

    What can rupture and cause subarachnoid or intracerebral hemorrhages?

    <p>Cerebral aneurysms (A)</p> Signup and view all the answers

    Flashcards

    Superficial Middle Cerebral Vein

    A large vein that receives blood from the superficial middle cerebral vein and drains into the cavernous sinus.

    Trolard Vein

    A vein that connects the superficial middle cerebral vein to the superior sagittal sinus.

    Labbé Vein

    A vein that connects the superficial middle cerebral vein to the transverse sinus.

    Inferior Cerebral Veins

    Veins that drain blood from the inferior aspect of each cerebral hemisphere.

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    Great Cerebral Vein (Vein of Galen)

    A large vein formed by the union of the two internal cerebral veins under the corpus callosum.

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    Subependymal Veins

    Veins that receive blood from the medullary veins and drain into the dural venous sinuses.

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    Internal Carotid Artery

    A major artery that supplies blood to the same side part of the brain hemispheres.

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    Bifurcation of Common Carotid Artery

    The point where the internal carotid artery branches off from the common carotid artery.

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    Cervical Part of Internal Carotid Artery

    The portion of the internal carotid artery that lies in the neck and has no branches.

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    Carotid Canal

    The opening in the skull through which the internal carotid artery enters.

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    Internal Carotid Artery Supplies

    The internal carotid artery supplies blood to the eye and its related structures in addition to the brain hemispheres.

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    Cavernous Part of Internal Carotid Artery

    The part of the internal carotid artery that lies within the cavernous sinus.

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    Internal Carotid Artery Bifurcation Level

    The level at which the internal carotid artery branches off from the common carotid artery, located at the upper level of the thyroid cartilage, around the level of the 4th cervical vertebra (C4).

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    Carotid Sinus

    A structure located at the bifurcation of the common carotid artery that contains baroreceptors, which are sensitive to changes in blood pressure.

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    Cerebral Arterial Circle (Circle of Willis)

    The circular network of arteries at the base of the brain formed by the internal carotid arteries and the vertebral arteries.

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    Cerebral Part of Internal Carotid Artery

    The part of the internal carotid artery that divides into its terminal branches when it reaches the anterior perforated substance.

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    Ophthalmic Artery

    An artery that branches off from the internal carotid artery and supplies blood to the eye.

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    Vertebral Arteries

    Arteries that arise from the subclavian arteries and eventually merge to form the basilar artery.

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    Petrous Part of Internal Carotid Artery

    The part of the internal carotid artery that passes near the cavernous sinus.

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    Aneurysm

    An abnormal swelling or bulge in an artery that can rupture and cause bleeding.

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    Circle of Willis Function

    A circular network of arteries at the base of the brain that ensures equal blood pressure distribution to different parts of the brain.

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    Stroke

    A condition caused by interruption of blood flow to the brain or brainstem, leading to brain cell damage.

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    Basilar Artery

    The main artery that extends along the ventral midline of the pons.

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    Anterior Inferior Cerebellar Arteries

    Arteries that branch off from the basilar artery and supply blood to the inferior surface of the cerebellum.

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    MCA

    The abbreviation for Middle Cerebral Artery, which supplies blood to a large portion of the brain.

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    Cerebral Aneurysm Rupture

    Cerebral aneurysms can rupture, leading to bleeding into the subarachnoid space or the brain itself.

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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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    CNS - Vascular Supply PDF

    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.

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