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Questions and Answers
Which artery serves the frontal, parietal, and temporal lobes?
Which artery serves the frontal, parietal, and temporal lobes?
Which artery supplies blood to the back portion of the brain, brainstem, cerebellum, and occipital lobes?
Which artery supplies blood to the back portion of the brain, brainstem, cerebellum, and occipital lobes?
Which artery serves the frontal and parietal lobes?
Which artery serves the frontal and parietal lobes?
Out of the 3 cerebral arteries, the posterior cerebral is the only one that serves the.....
Out of the 3 cerebral arteries, the posterior cerebral is the only one that serves the.....
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Which artery is NOT part of the Circle of Willis?
Which artery is NOT part of the Circle of Willis?
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Which arteries receive supplemented blood supply from intercostal and lumbar arteries?
Which arteries receive supplemented blood supply from intercostal and lumbar arteries?
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Which part of the spinal cord does the anterior spinal artery supply?
Which part of the spinal cord does the anterior spinal artery supply?
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Which layer of the meninges is described as the tough outer layer?
Which layer of the meninges is described as the tough outer layer?
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What is the function of the arachnoid villus or arachnoid granulations?
What is the function of the arachnoid villus or arachnoid granulations?
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Which space is only present pathologically in the spinal cord?
Which space is only present pathologically in the spinal cord?
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What is the composition of the epidural space in the spinal cord?
What is the composition of the epidural space in the spinal cord?
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Which layer of the meninges is described as the delicate/thin inner layer?
Which layer of the meninges is described as the delicate/thin inner layer?
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What forms folds of tissues that separate the cranial cavity into sections?
What forms folds of tissues that separate the cranial cavity into sections?
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Where is the subarachnoid space located?
Where is the subarachnoid space located?
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What is the function of dural reflections?
What is the function of dural reflections?
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Where is the epidural space present?
Where is the epidural space present?
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Which structure divides the cerebrum from the cerebellum?
Which structure divides the cerebrum from the cerebellum?
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What is the function of the denticulate ligaments?
What is the function of the denticulate ligaments?
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Where is the conus medullaris located?
Where is the conus medullaris located?
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What is the function of the choroid plexuses?
What is the function of the choroid plexuses?
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Which ventricle is found between the pons and cerebellum?
Which ventricle is found between the pons and cerebellum?
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Where is the site for lumbar puncture located?
Where is the site for lumbar puncture located?
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Which arteries are part of the vertebo-basilar system?
Which arteries are part of the vertebo-basilar system?
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Where does the CSF flow to first after circulating in the ventricular system?
Where does the CSF flow to first after circulating in the ventricular system?
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What is the function of the superior sagittal sinus?
What is the function of the superior sagittal sinus?
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What is the function of the filum terminale?
What is the function of the filum terminale?
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Where does the spinal cord end for adults?
Where does the spinal cord end for adults?
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The cauda aquina....
The cauda aquina....
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The subarachnoid space enlarges at the.....
The subarachnoid space enlarges at the.....
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The site for a lumbar puncture is the Lumbar cistern
The site for a lumbar puncture is the Lumbar cistern
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The arachnoid mater of the spinal cord consists of avascular CT with collagen and elastic fibers
The arachnoid mater of the spinal cord consists of avascular CT with collagen and elastic fibers
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The ________ is in between the epidural and subdural space
The ________ is in between the epidural and subdural space
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The _______ space only exists pathologically in the spinal cord
The _______ space only exists pathologically in the spinal cord
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Which of these layers adheres tightly to the nerual tissue of brain and spinal cord
Which of these layers adheres tightly to the nerual tissue of brain and spinal cord
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Which of the following sinuses drains the anterior skull?
Which of the following sinuses drains the anterior skull?
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The superior sagittal sinus drains into the....
The superior sagittal sinus drains into the....
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Which of the following plexuses is responsible for producing CSF?
Which of the following plexuses is responsible for producing CSF?
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The lateral ventricles are connected to the 3rd ventricle via the ____________ foramina
The lateral ventricles are connected to the 3rd ventricle via the ____________ foramina
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The cerebral aqueduct connects the the 3rd ventricle to the _________
The cerebral aqueduct connects the the 3rd ventricle to the _________
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The filum terminale fuses with the arachnoid and pia mater to anchor the spinal cord to coccyx
The filum terminale fuses with the arachnoid and pia mater to anchor the spinal cord to coccyx
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The inferior sagittal sinus first drains into the ______ sinus, which then drains into the confluence of sinuses
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
The 4th ventricle can drain CSF into the ________ or CSF exits the system via the medial and lateral apertures
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CSF leaves the subarachnoid space through the subarachnoid granulations to enter the.......
CSF leaves the subarachnoid space through the subarachnoid granulations to enter the.......
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Posterior Intercostal arteries and Lumbar arteries aid the Spinal arteries in providing blood supply to the spinal cord
Posterior Intercostal arteries and Lumbar arteries aid the Spinal arteries in providing blood supply to the spinal cord
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PICA syndrome is associated with the __________ artery and is commonly associated stroke
PICA syndrome is associated with the __________ artery and is commonly associated stroke
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Which of the following arteries is a branch from vertebral arteries?
Which of the following arteries is a branch from vertebral arteries?
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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.
