Tuesday, April 16, 2024

 

  • Describe several ways that intracellular fluid (ICF) differs from extracellular fluid (ECF). What ions are higher in the ICF vs ECF? '
K+ are higher concentration in ECF
  • Describe what a concentration gradient is and how it leads to diffusion and the establishment of a dynamic equilibrium.
    Can you identify the flow of ions in/out of cells based on concentration gradients?
  • Describe the mechanism of the Na+/K+ pump and explain how it contributes to the resting membrane potential of a cell.
    • What would happen to the resting membrane potential if the Na+/K+ pump was mutated and not working?
  • Describe the mechanism of Na+ and K+ leak channels. How do they contribute to the resting membrane potential of a cell? How do they contribute to membrane permeability?
  • What is the resting membrane potential? What voltage value is it typically for most cells in your body?

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