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20 Cards in this Set
- Front
- Back
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The central nervous system is composed of what two components?
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Brain
Spinal Nerve |
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The brain and spinal nerve composes what system?
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Central Nervous System
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What is the difference between tracts and nerves?
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Tracts (CNS)
Nerves (PNS) |
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Describe information from the environment to the brain.
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Afferent
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Describe information from the brain to the body.
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Efferent
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Afferent information is also known as what?
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Sensory Information
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Efferent information is also known as what?
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Motor Information
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Sensory information is also known as what?
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Sensory Information
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Motor information is also known as what?
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Efferent Information
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The spinal cord extends throughout the vertebral column.
True or false? |
False
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Why is it significant that the spinal cord doesn't extend through out the vertebral column and ends at lumbar vertebrae 1-2?
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The spinal cord does not grow after embryological development.
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If the spinal cord does not extend through out the vertebral column, how is the lack of length compensated?
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The processes of the nerve cell bodies grow instead forming the cauda equina.
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What two locations along the spinal cord are enlarged?
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Cervical & Lumbar Regions
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Why are the cervical and lumbar regions of the spinal cord enlarged?
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To innervated the extremities via the brachial plexus and lumbosacral plexus
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the two enlargements at the cervical and lumbar regions are called what?
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cervical - brachial plexus
lumbar - lumbosacral plexus |
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What is the pointed cone at the end of the spinal cord near lumbar vertebrae 1 and 2?
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Conus Medullaris
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What is the collection of ventral and dorsal roots at the end of the spinal cord in the ventral canal?
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cauda equina
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what type of tissue is the meninges?
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connective tissue
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what are the three layers of meninges starting from the vertebrae and ending at the spinal cord?
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vertebrae
dura mater arachnoid mater pia mater spinal cord |
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what is contained in the lumbar cistern?
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cauda equina
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