Podcast
Questions and Answers
The CNS consists of the ______ and spinal cord
The CNS consists of the ______ and spinal cord
brain
The PNS includes cranial nerves, rootlets, roots, spinal nerves, rami, and ______
The PNS includes cranial nerves, rootlets, roots, spinal nerves, rami, and ______
peripheral nerves
The outermost and toughest layer of the meninges is the ______ mater
The outermost and toughest layer of the meninges is the ______ mater
dura
The subarachnoid space contains ______ fluid
The subarachnoid space contains ______ fluid
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The delicate, weblike layer of the meninges is the ______ mater
The delicate, weblike layer of the meninges is the ______ mater
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The innermost, delicate layer of the meninges is the ______ mater
The innermost, delicate layer of the meninges is the ______ mater
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The tapering of the spinal cord is known as Conus ______
The tapering of the spinal cord is known as Conus ______
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The bundle of nerve fibers running inferior to the conus medullaris is called ______ equina
The bundle of nerve fibers running inferior to the conus medullaris is called ______ equina
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The space between the dura and vertebral column is the ______ space
The space between the dura and vertebral column is the ______ space
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The space between the arachnoid and dura is a ______ space
The space between the arachnoid and dura is a ______ space
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The spinal cord is supplied by the (anterior & posterior) ______
The spinal cord is supplied by the (anterior & posterior) ______
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The internal vertebral plexus is located in the ______ space
The internal vertebral plexus is located in the ______ space
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Cervical spinal nerves emerge superior to the numbered vertebral level, for example, C1 spinal nerve emerges above C1 ______
Cervical spinal nerves emerge superior to the numbered vertebral level, for example, C1 spinal nerve emerges above C1 ______
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Cervical enlargement accommodates higher concentration of nerve fibers to innervate the ______
Cervical enlargement accommodates higher concentration of nerve fibers to innervate the ______
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The ventral rootlets/roots of spinal nerves are responsible for ______ (motor) function
The ventral rootlets/roots of spinal nerves are responsible for ______ (motor) function
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Dorsal rami of spinal nerves innervate the intrinsic back muscles and provide ______ (sensory) input
Dorsal rami of spinal nerves innervate the intrinsic back muscles and provide ______ (sensory) input
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The intervertebral foramen is bounded superiorly and inferiorly by the ______
The intervertebral foramen is bounded superiorly and inferiorly by the ______
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The uncinate process of the inferior vertebra is part of the ______ intervertebral foramen
The uncinate process of the inferior vertebra is part of the ______ intervertebral foramen
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The spinal cord is supplied by ______ (anterior & posterior) arteries
The spinal cord is supplied by ______ (anterior & posterior) arteries
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The ventral and dorsal rami of spinal nerves contain ______ fibers
The ventral and dorsal rami of spinal nerves contain ______ fibers
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What are the three layers of the meninges?
What are the three layers of the meninges?
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What is the extension of the dura mater that anchors the dural sac to the coccyx?
What is the extension of the dura mater that anchors the dural sac to the coccyx?
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Which layer of the meninges is not attached to the dura but is pressed against it via pressure from CSF?
Which layer of the meninges is not attached to the dura but is pressed against it via pressure from CSF?
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What is the tapering of the spinal cord known as?
What is the tapering of the spinal cord known as?
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What forms the denticulate ligaments, anchoring the spinal cord to the dural sac?
What forms the denticulate ligaments, anchoring the spinal cord to the dural sac?
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What is the bundle of nerve fibers running inferior to the conus medullaris known as?
What is the bundle of nerve fibers running inferior to the conus medullaris known as?
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Where is the epidural space located?
Where is the epidural space located?
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What is the potential space located between the arachnoid and dura called?
What is the potential space located between the arachnoid and dura called?
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What is the delicate, weblike layer within the meninges where the CSF is found?
What is the delicate, weblike layer within the meninges where the CSF is found?
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What forms the closed sac that ends at the S2 level?
What forms the closed sac that ends at the S2 level?
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What are the boundaries of the intervertebral foramen?
What are the boundaries of the intervertebral foramen?
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In which areas of the body do the ventral rami of spinal nerves innervate?
In which areas of the body do the ventral rami of spinal nerves innervate?
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What is the function of the dorsal rami of spinal nerves?
What is the function of the dorsal rami of spinal nerves?
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What does the cervical enlargement of the spinal cord accommodate?
What does the cervical enlargement of the spinal cord accommodate?
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What are the contents of the vertebral canal?
What are the contents of the vertebral canal?
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What are the regions/segments of the spinal cord?
What are the regions/segments of the spinal cord?
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What is the function of the ventral rootlets/roots of spinal nerves?
What is the function of the ventral rootlets/roots of spinal nerves?
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Where is the internal vertebral plexus located?
Where is the internal vertebral plexus located?
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What do the spinal nerves emerge superior to, in terms of vertebral levels?
What do the spinal nerves emerge superior to, in terms of vertebral levels?
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How many cervical spinal nerves emerge superior to their numbered vertebral level?
How many cervical spinal nerves emerge superior to their numbered vertebral level?
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Study Notes
Central Nervous System (CNS) and Peripheral Nervous System (PNS)
- The CNS consists of the brain and spinal cord
- The PNS includes cranial nerves, rootlets, roots, spinal nerves, rami, and ganglia
Meninges
- The outermost and toughest layer of the meninges is the dura mater
- The delicate, weblike layer of the meninges is the arachnoid mater
- The innermost, delicate layer of the meninges is the pia mater
Spinal Cord
- The tapering of the spinal cord is known as Conus medullaris
- The bundle of nerve fibers running inferior to the conus medullaris is called cauda equina
- The spinal cord is supplied by the anterior and posterior spinal arteries
Vertebral Column and Spinal Nerves
- The internal vertebral plexus is located in the epidural space
- Cervical spinal nerves emerge superior to the numbered vertebral level
- The ventral rootlets/roots of spinal nerves are responsible for motor function
- Dorsal rami of spinal nerves innervate the intrinsic back muscles and provide sensory input
- The intervertebral foramen is bounded superiorly and inferiorly by the vertebrae
- The uncinate process of the inferior vertebra is part of the intervertebral foramen
Other Key Points
- The space between the dura and vertebral column is the epidural space
- The space between the arachnoid and dura is a potential space
- The cervical enlargement accommodates a higher concentration of nerve fibers to innervate the upper limbs
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Description
Test your knowledge about the central and peripheral nervous system, focusing on the vertebral column and meninges. Understand the composition and functions of the CNS and PNS, as well as the contents of the vertebral canal and meninges.
