Physiology LE 1: Synapse
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Questions and Answers

What is a synapse?

  • A type of receptor
  • A type of neuromodulator
  • A gap between two neurons (correct)
  • A type of neurotransmitter

    • What is the main function of neurotransmitters?

  • To regulate synaptic transmission
  • To transmit signals across the synapse (correct)
  • To modulate synaptic transmission
  • To inhibit synaptic transmission

    • What is neuromodulation?

  • A type of receptor
  • A type of neurotransmitter
  • A way to regulate synaptic transmission (correct)
  • A type of synaptic transmission

    • What is the difference between ionotropic and metabotropic receptors?

    <p>Ionotropic receptors are fast-acting, while metabotropic receptors are slow-acting</p> Signup and view all the answers

    What is the role of SNARE proteins in synaptic transmission?

    <p>To release neurotransmitters from the presynaptic neuron</p> Signup and view all the answers

    What is the function of botulinum toxin?

    <p>To inhibit the release of neurotransmitters</p> Signup and view all the answers

    What is the function of GABA in synaptic transmission?

    <p>To inhibit the release of neurotransmitters</p> Signup and view all the answers

    What is the role of neuropeptide Y (NPY) in synaptic transmission?

    <p>To regulate synaptic transmission through neuromodulators</p> Signup and view all the answers

    What is the difference between EPSP and IPSP?

    <p>EPSP is excitatory, while IPSP is inhibitory</p> Signup and view all the answers

    Where are synapses mostly located in a neuron?

    <p>On the neuronal dendrites</p> Signup and view all the answers

    What is the role of synapses in neurons?

    <p>To communicate between each other or with target organs</p> Signup and view all the answers

    What is the distance between presynaptic and postsynaptic neurons in a chemical synapse?

    <p>A distinct distance</p> Signup and view all the answers

    What is the function of Ca++ channels in presynaptic neurons?

    <p>To release vesicles</p> Signup and view all the answers

    What is the mode of transmission in a chemical synapse?

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

    Why does it take a longer time for an effective response to occur in a chemical synapse?

    <p>All of the above</p> Signup and view all the answers

    What is the role of receptors in postsynaptic neurons?

    <p>To receive chemical messengers</p> Signup and view all the answers

    What determines the direction of nervous signals in the nervous system?

    <p>The synapse</p> Signup and view all the answers

    What is the function of vesicles in presynaptic neurons?

    <p>To contain chemical messengers</p> Signup and view all the answers

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