Biology Lab: Structure and Function of Nerve Tissue
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Questions and Answers

What is the characteristic of the nucleus of a neuron?

  • Small, spherical, and heterochromatic
  • Small, oval, and heterochromatic
  • Large, spherical, and euchromatic (correct)
  • Large, oval, and euchromatic

    • What is the primary function of dendrites in neurons?

  • Receiving stimuli from the environment and other neurons (correct)
  • Generating and conducting nerve impulses
  • Participating in neural nutrition
  • Supporting and protecting neurons

    • Which type of neuron has one dendrite and one axon?

  • Pseudounipolar neuron
  • Unipolar neuron
  • Multipolar neuron
  • Bipolar neuron (correct)

    • What is the function of glial cells in the central nervous system?

    <p>Supporting and protecting neurons, participating in neural activity and nutrition</p> Signup and view all the answers

    What is the characteristic shape of dendrites in neurons?

    <p>Short and branched like a tree</p> Signup and view all the answers

    What is the term for neurons that have one axon and two or many dendrites?

    <p>Multipolar neurons</p> Signup and view all the answers

    What is the primary function of the neuron in the nervous system?

    <p>Receiving, transmitting, and processing stimuli</p> Signup and view all the answers

    What are the two main divisions of the nervous system?

    <p>Central nervous system and peripheral nervous system</p> Signup and view all the answers

    What is the primary component of the central nervous system?

    <p>Brain and spinal cord</p> Signup and view all the answers

    What is the function of glial cells in the nervous system?

    <p>Supporting and assisting neurons</p> Signup and view all the answers

    What is the structure of a neuron that receives stimuli?

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

    What is the term for the entire network of nerve cells and glial cells in the human body?

    <p>Nervous system</p> Signup and view all the answers

    What is the characteristic of the brain and spinal cord?

    <p>They are soft and gel-like organs</p> Signup and view all the answers

    What is the distribution of white and gray matter in a cross-section of the spinal cord?

    <p>White matter is peripheral and gray matter is internal</p> Signup and view all the answers

    What is the function of ganglia in the PNS?

    <p>To transmit nerve impulses</p> Signup and view all the answers

    What is the difference between sensory and autonomic ganglia?

    <p>Sensory ganglia transmit sensory information, while autonomic ganglia regulate involuntary functions</p> Signup and view all the answers

    What is the structure that surrounds ganglia?

    <p>Connective tissue</p> Signup and view all the answers

    What type of glial cells forms a myelin layer around axons in the PNS?

    <p>Schwann cells</p> Signup and view all the answers

    What is the function of the myelin sheath in nerve fibers?

    <p>To facilitate the transmission of nerve impulses</p> Signup and view all the answers

    What is the term for the gaps between adjacent Schwann cells in myelinated nerve fibers?

    <p>Node of Ranvier</p> Signup and view all the answers

    What type of nerve fibers are more abundant in the CNS?

    <p>Unmyelinated nerve fibers</p> Signup and view all the answers

    What are the three connective tissue layers that enclose axons and Schwann cells in nerves?

    <p>Epineurium, Perineurium, Endoneurium</p> Signup and view all the answers

    What is the main structure of the CNS that is located in the vertebral canal?

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

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