Neuroanatomy 2 Quiz
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Questions and Answers

Which artery serves the frontal, parietal, and temporal lobes?

  • Middle cerebral artery (correct)
  • Anterior cerebral artery
  • Vertebral artery
  • Posterior cerebral artery

    • Which artery supplies blood to the back portion of the brain, brainstem, cerebellum, and occipital lobes?

  • Vertebral arteries
  • Middle cerebral artery
  • Anterior cerebral artery
  • Basilar artery (correct)

    • Which artery serves the frontal and parietal lobes?

  • Anterior cerebral artery (correct)
  • Vertebral artery
  • Middle cerebral artery
  • Posterior cerebral artery

    • Out of the 3 cerebral arteries, the posterior cerebral is the only one that serves the.....

    <p>Occipital lobe</p> Signup and view all the answers

    Which artery is NOT part of the Circle of Willis?

    <p>Posterior cerebellar artery</p> Signup and view all the answers

    Which arteries receive supplemented blood supply from intercostal and lumbar arteries?

    <p>Spinal arteries</p> Signup and view all the answers

    Which part of the spinal cord does the anterior spinal artery supply?

    <p>Anterior 2/3</p> Signup and view all the answers

    Which layer of the meninges is described as the tough outer layer?

    <p>Dura mater</p> Signup and view all the answers

    What is the function of the arachnoid villus or arachnoid granulations?

    <p>Absorption of cerebrospinal fluid</p> Signup and view all the answers

    Which space is only present pathologically in the spinal cord?

    <p>Subdural space</p> Signup and view all the answers

    What is the composition of the epidural space in the spinal cord?

    <p>All of the above</p> Signup and view all the answers

    Which layer of the meninges is described as the delicate/thin inner layer?

    <p>Pia mater</p> Signup and view all the answers

    What forms folds of tissues that separate the cranial cavity into sections?

    <p>Dura mater</p> Signup and view all the answers

    Where is the subarachnoid space located?

    <p>Between the arachnoid mater and pia mater</p> Signup and view all the answers

    What is the function of dural reflections?

    <p>Limit spread of trauma/damage</p> Signup and view all the answers

    Where is the epidural space present?

    <p>Pathologically in the brain</p> Signup and view all the answers

    Which structure divides the cerebrum from the cerebellum?

    <p>Tentorium cerebelli</p> Signup and view all the answers

    What is the function of the denticulate ligaments?

    <p>To anchor the spinal cord in the middle of its dural sheath</p> Signup and view all the answers

    Where is the conus medullaris located?

    <p>At the end of the spinal cord</p> Signup and view all the answers

    What is the function of the choroid plexuses?

    <p>To produce cerebrospinal fluid</p> Signup and view all the answers

    Which ventricle is found between the pons and cerebellum?

    <p>4th ventricle</p> Signup and view all the answers

    Where is the site for lumbar puncture located?

    <p>Between the conus medullaris and the end of the dural sac</p> Signup and view all the answers

    Which arteries are part of the vertebo-basilar system?

    <p>Basilar A.</p> Signup and view all the answers

    Where does the CSF flow to first after circulating in the ventricular system?

    <p>Into the subarachnoid space</p> Signup and view all the answers

    What is the function of the superior sagittal sinus?

    <p>To receive blood from the superior aspect of the cranium</p> Signup and view all the answers

    What is the function of the filum terminale?

    <p>To tether the spinal cord to the coccyx</p> Signup and view all the answers

    Where does the spinal cord end for adults?

    <p>L2</p> Signup and view all the answers

    The cauda aquina....

    <p>contains remaining spinal nerves</p> Signup and view all the answers

    The subarachnoid space enlarges at the.....

    <p>Lumbar Cistern</p> Signup and view all the answers

    The site for a lumbar puncture is the Lumbar cistern

    <p>True</p> Signup and view all the answers

    The arachnoid mater of the spinal cord consists of avascular CT with collagen and elastic fibers

    <p>True</p> Signup and view all the answers

    The ________ is in between the epidural and subdural space

    Signup and view all the answers

    The _______ space only exists pathologically in the spinal cord

    Signup and view all the answers

    Which of these layers adheres tightly to the nerual tissue of brain and spinal cord

    <p>Pia mater</p> Signup and view all the answers

    Which of the following sinuses drains the anterior skull?

    <p>Cavernous sinus</p> Signup and view all the answers

    The superior sagittal sinus drains into the....

    <p>Confluence of sinuses</p> Signup and view all the answers

    Which of the following plexuses is responsible for producing CSF?

    <p>All of the above</p> Signup and view all the answers

    The lateral ventricles are connected to the 3rd ventricle via the ____________ foramina

    Signup and view all the answers

    The cerebral aqueduct connects the the 3rd ventricle to the _________

    Signup and view all the answers

    The filum terminale fuses with the arachnoid and pia mater to anchor the spinal cord to coccyx

    <p>False</p> Signup and view all the answers

    The inferior sagittal sinus first drains into the ______ sinus, which then drains into the confluence of sinuses

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    The 4th ventricle can drain CSF into the ________ or CSF exits the system via the medial and lateral apertures

    Signup and view all the answers

    CSF leaves the subarachnoid space through the subarachnoid granulations to enter the.......

    <p>Venous Sinuses</p> Signup and view all the answers

    Posterior Intercostal arteries and Lumbar arteries aid the Spinal arteries in providing blood supply to the spinal cord

    <p>True</p> Signup and view all the answers

    PICA syndrome is associated with the __________ artery and is commonly associated stroke

    Signup and view all the answers

    Which of the following arteries is a branch from vertebral arteries?

    <p>Posterior inferior cerebellar artery</p> Signup and view all the answers

    Study Notes

    Cerebral Arteries

    • The middle cerebral artery serves the frontal, parietal, and temporal lobes.
    • The posterior cerebral artery supplies blood to the occipital lobes, cerebellum, brainstem, and back portion of the brain.
    • The anterior cerebral artery serves the frontal and parietal lobes.
    • Among the three cerebral arteries, the posterior cerebral artery serves the posterior aspect of the brain exclusively.
    • The anterior communicating artery is not part of the Circle of Willis.

    Blood Supply to the Spinal Cord

    • Arteries supplemented by intercostal and lumbar arteries include the posterior and anterior spinal arteries.
    • The anterior spinal artery supplies the anterior part of the spinal cord.

    Meninges

    • The dura mater is the tough outer layer of the meninges.
    • The arachnoid villi or granulations function to reabsorb cerebrospinal fluid (CSF) into the bloodstream.
    • The subdural space is present only pathologically in the spinal cord.
    • The epidural space is composed of fat and connective tissue.
    • The pia mater is the delicate inner layer of the meninges.

    Anatomical Structures

    • The falx cerebri forms folds of tissue that separate the cranial cavity into sections.
    • The subarachnoid space is located between the arachnoid mater and pia mater.
    • Dural reflections function to provide support and compartmentalize the brain within the cranial cavity.
    • The epidural space is present surrounding the spinal cord.
    • The tentorium cerebelli divides the cerebrum from the cerebellum.
    • Denticulate ligaments help anchor the spinal cord laterally within the vertebral canal.

    Spinal Cord and CSF

    • The conus medullaris is located at the lower end of the spinal cord, around the L1-L2 vertebral levels.
    • The choroid plexuses produce cerebrospinal fluid (CSF).
    • The fourth ventricle is found between the pons and cerebellum.
    • The lumbar puncture site is located in the lumbar cistern, often around the L3-L4 interspace.
    • The vertebro-basilar system consists of the vertebral and basilar arteries.

    CSF Dynamics

    • After circulating through the ventricular system, CSF first flows into the subarachnoid space.
    • The superior sagittal sinus drains blood from the brain and is key in venous drainage.
    • The filum terminale anchors the spinal cord to the coccyx.
    • For adults, the spinal cord ends at the L1-L2 vertebral level.

    Other Key Facts

    • The cauda equina consists of nerve roots in the lower spinal canal.
    • The subarachnoid space enlarges at the lumbar cistern.
    • The interstitial space exists between the epidural and subdural spaces.
    • The arachnoid mater of the spinal cord is made of avascular connective tissue containing collagen and elastic fibers.
    • The inferior sagittal sinus drains into the straight sinus, leading to the confluence of sinuses.
    • The lateral ventricles connect to the third ventricle via the interventricular foramina (Monro).
    • The cerebral aqueduct connects the third ventricle to the fourth ventricle.
    • The 4th ventricle can drain CSF into the central canal or it leaves the system via the medial and lateral apertures.
    • CSF exits the subarachnoid space through the arachnoid granulations to enter the venous system.
    • The PICA syndrome is linked with the posterior inferior cerebellar artery and relates to common strokes.
    • A notable branch from the vertebral arteries includes the posterior inferior cerebellar artery (PICA).

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    Description

    Test your knowledge of neuroanatomy covering the meninges, ventricular system, and brain blood supply, along with the protection of the central nervous system (CNS) including the bone structure, connective tissues, and cerebrospinal fluid (CSF). This quiz also explores the specific layers of the meninges in the brain and spinal cord.

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