Podcast
Questions and Answers
What is the result of more leak channels for K+ than for Na+ in the cell?
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?
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?
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?
What is the function of dopamine in the brain?
What is the primary function of neurons?
What is the primary function of neurons?
What is the result of an action potential not reaching the threshold potential?
What is the result of an action potential not reaching the threshold potential?
What is the term for the difference in positive and negative charges across the cell membrane?
What is the term for the difference in positive and negative charges across the cell membrane?
What is the purpose of synaptic transmission?
What is the purpose of synaptic transmission?
What happens when addictive drugs are consumed?
What happens when addictive drugs are consumed?
Which ions are responsible for generating the resting membrane potential?
Which ions are responsible for generating the resting membrane potential?
What is the role of leak channels in the resting membrane potential?
What is the role of leak channels in the resting membrane potential?
What is necessary for charged particles to pass through the cell membrane?
What is necessary for charged particles to pass through the cell membrane?
What is the purpose of the sodium-potassium pump?
What is the purpose of the sodium-potassium pump?
Which type of transport allows substances to diffuse through the cell membrane unaided?
Which type of transport allows substances to diffuse through the cell membrane unaided?
What is the direction of ion movement through the sodium-potassium pump?
What is the direction of ion movement through the sodium-potassium pump?
What is the term for the movement of electrical charge?
What is the term for the movement of electrical charge?
