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Questions and Answers
What protects the central nervous system (CNS)?
What protects the central nervous system (CNS)?
- Organs and blood vessels
- Bones and muscles
- Skin and fat tissues
- Tough meningeal membranes and bones (correct)
What protects the central nervous system (CNS)?
What protects the central nervous system (CNS)?
- None of the above
- Surrounding muscles
- Physical and chemical barriers (correct)
- Involuntary reflexes
What protects the central nervous system?
What protects the central nervous system?
- The digestive system
- Physical and chemical barriers (correct)
- Bones and muscles
- The respiratory system
What prevents most chemicals from entering the CNS?
What prevents most chemicals from entering the CNS?
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What can cause peripheral neuropathy?
What can cause peripheral neuropathy?
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Which of the following can cause peripheral neuropathy?
Which of the following can cause peripheral neuropathy?
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What prevents nerve fibers from regrowing in the spinal cord?
What prevents nerve fibers from regrowing in the spinal cord?
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What is the consequence of spinal cord injuries?
What is the consequence of spinal cord injuries?
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What can cause peripheral neuropathy?
What can cause peripheral neuropathy?
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Study Notes
- The central nervous system (CNS) is protected by physical and chemical barriers.
- The brain and spinal cord are surrounded by tough meningeal membranes and enclosed in bones.
- The blood-brain barrier prevents most chemicals from entering the CNS.
- Damage to the CNS has more serious consequences than damage to the peripheral nervous system (PNS).
- Nerves can be damaged by physical trauma, swelling, or bruises.
- Peripheral neuropathy can be caused by genetic, metabolic, inflammatory, infectious, or toxic conditions.
- Nerves can temporarily lose function due to mechanical pressure, temperature changes, or chemical interactions.
- Spinal cord injuries can result in loss of sensation or movement.
- Scar tissue in the spinal cord prevents nerve fibers from regrowing.
- CNS protections make it less susceptible to damage, but damage can have serious consequences.
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