The Brain Quiz
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Questions and Answers

Which part of the brain is responsible for complex sensory perception, motor control, endocrine regulation, and the development of intelligence?

  • Spinal cord
  • Hindbrain
  • Midbrain
  • Forebrain (correct)

    • Where is the brain typically located in the body?

  • Chest
  • Head (correct)
  • Abdomen
  • Back

    • How many neurons are estimated to be in the cerebellum?

  • 14-16 billion
  • 55-70 billion (correct)
  • Less than 1 billion
  • More than 100 billion

    • Which part of the neuron sends signals to specific target cells over long distances?

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

    Which of the following is true about axons?

    <p>Axons transmit signals in the form of electrical pulses</p> Signup and view all the answers

    What are the two broad classes of cells that make up the brain?

    <p>Neurons and glia cells</p> Signup and view all the answers

    What is the speed at which action potentials travel along an axon?

    <p>100-1000 meters per second</p> Signup and view all the answers

    What is the function of glial cells in the brain?

    <p>Structural support and insulation</p> Signup and view all the answers

    How do axons transmit signals to other neurons?

    <p>Through specialized junctions called synapses</p> Signup and view all the answers

    What is the role of the prefrontal cortex in the brain?

    <p>Controlling executive functions</p> Signup and view all the answers

    What is the primary mechanism for learning and memory in the brain?

    <p>Activity-dependent modification of synapses</p> Signup and view all the answers

    Which part of the brain is responsible for the development of intelligence?

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

    What is the estimated number of neurons in the cerebral cortex?

    <p>14-16 billion</p> Signup and view all the answers

    Which part of the brain is considered a caudal extension of the myelencephalon?

    <p>Spinal cord</p> Signup and view all the answers

    Which of the following is true about synapses?

    <p>Synapses are the points at which cell-to-cell communication occurs in the brain.</p> Signup and view all the answers

    What is the primary function of the brain?

    <p>To facilitate cell-to-cell communication.</p> Signup and view all the answers

    What is the function of myelin in the brain?

    <p>To increase the speed of signal propagation along axons.</p> Signup and view all the answers

    What is the approximate number of synapses in the human brain?

    <p>100 trillion synapses.</p> Signup and view all the answers

    Which of the following is true about dendrites?

    <p>Dendrites are root-like protrusions that connect neurons to other neurons</p> Signup and view all the answers

    What is the function of the prefrontal cortex in the brain?

    <p>The prefrontal cortex controls executive functions</p> Signup and view all the answers

    What is the primary role of glial cells in the brain?

    <p>Glial cells provide structural support, metabolic support, insulation, and guidance of development</p> Signup and view all the answers

    How do neurons send signals to specific target cells over long distances?

    <p>Neurons send signals through thin protoplasmic fibers called axons</p> Signup and view all the answers

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