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 (B)</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 (B)</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 (B)</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 (D)</p> Signup and view all the answers

What is the function of glial cells in the brain?

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

How do axons transmit signals to other neurons?

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

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

<p>Controlling executive functions (B)</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 (A)</p> Signup and view all the answers

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

<p>Forebrain (B)</p> Signup and view all the answers

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

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

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

<p>Spinal cord (C)</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. (A)</p> Signup and view all the answers

What is the primary function of the brain?

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

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

<p>100 trillion synapses. (C)</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 (A)</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 (D)</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 (C)</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 (B)</p> Signup and view all the answers

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