CNS: Brain & Spinal Cord Functions

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Questions and Answers

What is the function of the meninges in the central nervous system?

  • To protect the brain and spinal cord from toxins (correct)
  • To process sensory information
  • To absorb cerebrospinal fluid
  • To regulate blood flow to the brain

What is the purpose of the blood-brain barrier?

  • To prevent toxins from entering the brain (correct)
  • To promote the flow of cerebrospinal fluid
  • To enhance sensory processing
  • To support communication between brain regions

What is the main role of dura mater in the central nervous system?

  • It forms a tough protective layer around the brain (correct)
  • It regulates neural impulses
  • It produces cerebrospinal fluid
  • It processes sensory information

How is meningitis primarily detected for diagnosis?

<p>By sampling cerebrospinal fluid through a spinal tap (A)</p>
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Which structure is responsible for draining cerebrospinal fluid to the jugular vein for reabsorption into the bloodstream?

<p>Sigmoid sinuses (B)</p>
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Where is the subdural space located in relation to the dura mater and arachnoid mater?

<p>Under the arachnoid mater (A)</p>
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What is the function of CSF (Cerebrospinal fluid) within the subarachnoid space?

<p>To protect the brain from impact of the skull (C)</p>
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Which layer is described as 'Spider mother' in the text?

<p>Arachnoid mater (D)</p>
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Where are the ventricles located within the brain?

<p>Deep inside the brain tissue (C)</p>
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What is the pathway of CSF flow starting from the lateral ventricles?

<p>Interventricular foramina to third ventricle to cerebral aqueduct to fourth ventricle (C)</p>
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