Anatomy of the Central Nervous System
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Questions and Answers

What is the primary location of gray matter in the spinal cord?

  • Deep in the cerebrum
  • Spread throughout the spinal cord
  • Outside, forming a layer
  • Inside, forming an 'H' shape (correct)

    • What is the main function of the neurons in the cerebral cortex?

  • Sensory functions
  • Motor functions
  • Cognition, emotion, and consciousness (correct)
  • Automatic functions

    • What is the primary component of white matter in the CNS?

  • Dendrites
  • Glial cells
  • Myelinated axons (correct)
  • Neuron somas

    • What is the term for collections of axons traveling together in the CNS?

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

    What is the main characteristic that distinguishes gray matter from white matter?

    <p>Presence of neuron somas</p> Signup and view all the answers

    What is the term for areas of gray matter deep in the brain?

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

    What is the main function of neurons in the CNS that participate in automatic functions?

    <p>Regulating body temperature</p> Signup and view all the answers

    Where are the neuron somas primarily located in the cerebral cortex?

    <p>On the surface of the cerebrum</p> Signup and view all the answers

    What is the term for the outer layer of gray matter in the cerebellum?

    <p>Cerebellar cortex</p> Signup and view all the answers

    What is the primary location of white matter in the brain?

    <p>Deep in the cerebrum and brain stem</p> Signup and view all the answers

    Which of the following is a characteristic of tracts in the CNS?

    <p>They are composed of myelinated axons</p> Signup and view all the answers

    What is the term for areas of gray matter deep in the brain that contain many neuron somas?

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

    What is the main function of neurons in the CNS that participate in sensory functions?

    <p>To transmit sensory information</p> Signup and view all the answers

    What is the significance of the gray matter in the CNS?

    <p>It contains most of the neuron somas</p> Signup and view all the answers

    Which part of the brain contains neurons participating in higher functions such as cognition and emotion?

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

    What is the characteristic of white matter in the CNS?

    <p>It is composed of myelinated axons</p> Signup and view all the answers

    What is the main difference between gray matter and white matter in the CNS?

    <p>Gray matter contains neuron somas, while white matter is composed of myelinated axons</p> Signup and view all the answers

    What is the function of the CNS?

    <p>To integrate sensory, motor, and automatic functions</p> Signup and view all the answers

    Study Notes

    Central Nervous System (CNS)

    • The CNS consists of the brain and spinal cord.
    • Gray matter in the CNS contains most of the neuron somas.
    • White matter in the CNS is composed of myelinated axons.

    Spinal Cord

    • Gray matter in the spinal cord is mostly located on the inside, forming an "H" shape or butterfly shape.
    • White matter in the spinal cord is mostly located on the outside.
    • Gray matter contains neuron somas, giving it a different color from the white matter.

    Brain

    • Gray matter in the brain is mostly located on the outside, forming a layer called the cortex.
    • The cortex covering the cerebrum is called the cerebral cortex, and the cortex covering the cerebellum is called the cerebellar cortex.
    • Gray matter on the outside of the brain contains most of the neuron somas.
    • White matter in the brain is mostly located on the inside, deep in the cerebrum and brain stem.

    Gray Matter

    • Gray matter contains neuron somas.
    • Areas of gray matter deep in the brain are called nuclei.
    • Nuclei contain lots of neuron somas.

    White Matter

    • White matter is composed of myelinated axons.
    • Collections of axons traveling together in the CNS are called tracts.
    • Tracts can have many axons carrying similar information from one part of the CNS to another.

    Functions of the CNS

    • The CNS has neurons involved in motor, sensory, and automatic functions.
    • The CNS also has neurons participating in higher functions such as cognition, emotion, and consciousness, particularly in the cerebral cortex.

    Central Nervous System (CNS)

    • Consists of the brain and spinal cord.

    Spinal Cord

    • Gray matter is located internally, forming an "H" or butterfly shape.
    • White matter is located externally.
    • Gray matter contains neuron somas, giving it a different color from white matter.

    Brain

    • Gray matter is located externally, forming a layer called the cortex.
    • Cerebral cortex covers the cerebrum.
    • Cerebellar cortex covers the cerebellum.
    • External gray matter contains most neuron somas.
    • White matter is located internally, deep in the cerebrum and brain stem.

    Gray Matter

    • Contains neuron somas.
    • Deep areas of gray matter are called nuclei.
    • Nuclei contain many neuron somas.

    White Matter

    • Composed of myelinated axons.
    • Collections of axons are called tracts.
    • Tracts carry similar information from one part of the CNS to another.

    Functions of the CNS

    • Involved in motor, sensory, and automatic functions.
    • Participates in higher functions like cognition, emotion, and consciousness, particularly in the cerebral cortex.

    Central Nervous System (CNS)

    • Consists of the brain and spinal cord.

    Spinal Cord

    • Gray matter is located internally, forming an "H" or butterfly shape.
    • White matter is located externally.
    • Gray matter contains neuron somas, giving it a different color from white matter.

    Brain

    • Gray matter is located externally, forming a layer called the cortex.
    • Cerebral cortex covers the cerebrum.
    • Cerebellar cortex covers the cerebellum.
    • External gray matter contains most neuron somas.
    • White matter is located internally, deep in the cerebrum and brain stem.

    Gray Matter

    • Contains neuron somas.
    • Deep areas of gray matter are called nuclei.
    • Nuclei contain many neuron somas.

    White Matter

    • Composed of myelinated axons.
    • Collections of axons are called tracts.
    • Tracts carry similar information from one part of the CNS to another.

    Functions of the CNS

    • Involved in motor, sensory, and automatic functions.
    • Participates in higher functions like cognition, emotion, and consciousness, particularly in the cerebral cortex.

    Central Nervous System (CNS)

    • Consists of the brain and spinal cord.

    Spinal Cord

    • Gray matter is located internally, forming an "H" or butterfly shape.
    • White matter is located externally.
    • Gray matter contains neuron somas, giving it a different color from white matter.

    Brain

    • Gray matter is located externally, forming a layer called the cortex.
    • Cerebral cortex covers the cerebrum.
    • Cerebellar cortex covers the cerebellum.
    • External gray matter contains most neuron somas.
    • White matter is located internally, deep in the cerebrum and brain stem.

    Gray Matter

    • Contains neuron somas.
    • Deep areas of gray matter are called nuclei.
    • Nuclei contain many neuron somas.

    White Matter

    • Composed of myelinated axons.
    • Collections of axons are called tracts.
    • Tracts carry similar information from one part of the CNS to another.

    Functions of the CNS

    • Involved in motor, sensory, and automatic functions.
    • Participates in higher functions like cognition, emotion, and consciousness, particularly in the cerebral cortex.

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    Description

    This quiz covers the structure and composition of the central nervous system, including the brain and spinal cord, and their gray and white matter.

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