nervous system part 2
16 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the result of more leak channels for K+ than for Na+ in the cell?

  • The leak channels for K+ and Na+ become equal
  • The inside of the cell becomes more positive
  • The inside of the cell becomes more negative (correct)
  • The movement of Na+ and K+ stops

    • What is the purpose of graded potentials?

  • To store information in the neuron
  • To transmit signals over short distances (correct)
  • To inhibit the transmission of signals
  • To transmit signals over long distances

    • What is the threshold potential for an action potential to start?

  • -40 mV
  • -70 mV
  • -55 mV (correct)
  • -60 mV

    • What is the function of dopamine in the brain?

    <p>Reward-motivated behavior</p> Signup and view all the answers

    What is the primary function of neurons?

    <p>To communicate information through electrical signals</p> Signup and view all the answers

    What is the result of an action potential not reaching the threshold potential?

    <p>The action potential stops</p> Signup and view all the answers

    What is the term for the difference in positive and negative charges across the cell membrane?

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

    What is the purpose of synaptic transmission?

    <p>To transmit signals between neurons</p> Signup and view all the answers

    What happens when addictive drugs are consumed?

    <p>Dopamine release is increased</p> Signup and view all the answers

    Which ions are responsible for generating the resting membrane potential?

    <p>Sodium and potassium</p> Signup and view all the answers

    What is the role of leak channels in the resting membrane potential?

    <p>They are involved in the movement of Na+ and K+</p> Signup and view all the answers

    What is necessary for charged particles to pass through the cell membrane?

    <p>Channel proteins</p> Signup and view all the answers

    What is the purpose of the sodium-potassium pump?

    <p>To maintain the resting membrane potential</p> Signup and view all the answers

    Which type of transport allows substances to diffuse through the cell membrane unaided?

    <p>Simple diffusion</p> Signup and view all the answers

    What is the direction of ion movement through the sodium-potassium pump?

    <p>Sodium ions out of the cell, potassium ions into the cell</p> Signup and view all the answers

    What is the term for the movement of electrical charge?

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

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser