Nervous System Basics
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Questions and Answers

What is the primary function of the peripheral nervous system?

  • Sorting messages and channeling them to the correct part of the brain
  • Analyzing information and making decisions
  • Collecting information needed to make decisions (correct)
  • Controlling our voluntary movements

    • What is the role of the cerebrum in the nervous system?

  • Controlling our voluntary movements, thinking, and decision-making processes (correct)
  • Gathering information from the environment
  • Controlling our physical coordination
  • Helping sort messages and channeling them to the correct part of the brain

    • What is the term for any change in our internal or external environment?

  • Stimulus (correct)
  • Neuron
  • Reflex action
  • Sensory receptor

    • What is the function of the brain stem?

    <p>Helping sort messages and channeling them to the correct part of the brain</p> Signup and view all the answers

    What is the term for the automatic and rapid response to a stimulus?

    <p>Reflex action</p> Signup and view all the answers

    What is the bundle of fibers composed of neurons that transmit information from one body part to another?

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

    What is the primary function of the central nervous system?

    <p>To analyze information and make decisions</p> Signup and view all the answers

    What type of nerves carry impulses away from the central nervous system?

    <p>Motor nerves</p> Signup and view all the answers

    Which of the following is NOT a component of the nervous system?

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

    What is the function of interneurons?

    <p>To process information from sensory nerves to decide on a response</p> Signup and view all the answers

    What is the role of the peripheral nervous system?

    <p>To transmit sensory information to the central nervous system</p> Signup and view all the answers

    What is the primary function of sensory nerves?

    <p>To carry impulses toward the central nervous system</p> Signup and view all the answers

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

    <p>100 billion</p> Signup and view all the answers

    Which part of the brain is responsible for controlling vital life functions such as breathing and heart rate?

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

    What is the main function of the thalamus in the brain?

    <p>To direct information to the correct part of the cerebral cortex</p> Signup and view all the answers

    What is the purpose of the hypothalamus in the brain?

    <p>To control autonomic functions such as hunger and thirst</p> Signup and view all the answers

    What is the function of the spinal cord in the central nervous system?

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

    How many segments does the spinal cord have?

    <p>31</p> Signup and view all the answers

    What is the role of sensory neurons in the nervous system?

    <p>Receiving information and sending impulses to the brain or spinal cord</p> Signup and view all the answers

    What is the term for the difference in electrical charge between the inside and outside of a neuron?

    <p>Membrane potential</p> Signup and view all the answers

    What is the function of motor neurons in the nervous system?

    <p>Conducting impulses from the brain or spinal cord to muscles or glands</p> Signup and view all the answers

    What is the term for the electrical messages sent by neurons?

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

    What is the role of association neurons in the nervous system?

    <p>Carrying impulses between sensory and motor neurons</p> Signup and view all the answers

    What is the term for the charge of a neuron at rest?

    <p>Resting potential</p> Signup and view all the answers

    What is epilepsy characterized by?

    <p>Sudden convulsions, abnormal muscle jerks, seizures, and unconsciousness</p> Signup and view all the answers

    What is the primary cause of poliomyelitis?

    <p>Polio virus</p> Signup and view all the answers

    What is the purpose of occupational therapy for people with amnesia?

    <p>To help them cope with the condition</p> Signup and view all the answers

    What is a common cause of amnesia?

    <p>Head injuries</p> Signup and view all the answers

    What is the recommended treatment for epilepsy?

    <p>Surgery and regular medication</p> Signup and view all the answers

    What is polio vaccine effective in preventing?

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

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