Nervous System Organization: CNS and PNS
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Questions and Answers

Which of the following veins provides an accessory route of drainage for the brain?

  • Superior ophthalmalic vein
  • Vertebral vein (correct)
  • Internal jugular vein
  • Pterygoid plexus
  • Which of the following meningeal layers is the thinnest?

  • Dura mater
  • Subarachnoid space
  • Pia mater (correct)
  • Arachnoid mater
  • Which of the following is NOT a part of the cerebrum?

  • Frontal lobe
  • Cerebellum (correct)
  • Parietal lobe
  • Occipital lobe
  • Which of the following is the function of the emissary veins?

    <p>To connect intracranial vessels with veins in the scalp</p> Signup and view all the answers

    Which of the following is the space between the vertebral bone and the underlying spinal dura?

    <p>Epidural space</p> Signup and view all the answers

    How many horns do each of the left and right ventricles of the brain have?

    <p>3</p> Signup and view all the answers

    What is the primary function of the Peripheral Nervous System (PNS)?

    <p>to connect the Central Nervous System (CNS) to peripheral targets</p> Signup and view all the answers

    What is the main difference between white matter and gray matter in the Central Nervous System (CNS)?

    <p>White matter is composed of axons, while gray matter is composed of neurons and their supporting cells</p> Signup and view all the answers

    What are the five bones that form the cranium, which encases the brain?

    <p>Frontal, Parietal, Occipital, Temporal, and Sphenoid</p> Signup and view all the answers

    Where does the spinal cord approximately end?

    <p>At the level of the second lumbar vertebra (L2)</p> Signup and view all the answers

    What are the two main arteries that supply blood to the brain?

    <p>Internal carotid artery and vertebral artery</p> Signup and view all the answers

    What is the term for the bundle of nerve roots that extend from the lumbar and sacral vertebrae?

    <p>Cauda equina</p> Signup and view all the answers

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