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Neurochemical Messengers
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Neurochemical Messengers

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Questions and Answers

What is the primary function of GABA in the brain?

  • To inhibit or prevent neurons from firing (correct)
  • To facilitate learning and memory
  • To control muscle movements
  • To stimulate neurons to fire

    • What is a characteristic of acetylcholine (ACh)?

  • It is involved in learning, memory, and muscle action (correct)
  • It is involved in anxiety disorders
  • It inhibits the firing of neurons
  • It is usually found in the peripheral nervous system

    • What is a consequence of low levels of GABA in the brain?

  • Impaired learning and memory
  • Anxiety disorders (correct)
  • Violent muscle spasms
  • Increased risk of Alzheimer's disease

    • What is the effect of the venom from a black widow spider?

    <p>It causes acetylcholine to be released excessively</p> Signup and view all the answers

    What is the primary role of glutamate in the brain?

    <p>To excite many neurons to fire</p> Signup and view all the answers

    How do antianxiety drugs work in relation to GABA?

    <p>They increase the inhibiting effects of GABA</p> Signup and view all the answers

    What is the main function of neurotransmitters in the brain?

    <p>To stimulate neurons to fire</p> Signup and view all the answers

    How do some neurotransmitters differ in their function?

    <p>Some activate neurons, while others deactivate them</p> Signup and view all the answers

    What analogy is used to describe how neurotransmitters interact with receptor sites?

    <p>Like keys in keyholes</p> Signup and view all the answers

    What effect does the venom of the black widow spider have on neurotransmission?

    <p>It disturbs neurotransmission</p> Signup and view all the answers

    How do drugs interfere with neurotransmission?

    <p>By enhancing the effects of neurotransmitters</p> Signup and view all the answers

    What is usually true about the secretion of neurotransmitters by neurons?

    <p>Most neurons only secrete one type of neurotransmitter</p> Signup and view all the answers

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