Question

Which of the following statements are true regarding postsynaptic potentials? Assume cell at rest is at -60mV. (Select all that apply) Question 1 options: A.The opening of cation sensitive ion channels causes K to enter the cell, resulting in an IPSP B.The opening of chloride sensitive ion channels results in an IPSP C. The opening of cation sensitive ion channels causes Na to enter the cell, resulting in an EPSP D. The opening of cation sensitive ion channels causes Ca to leave the cell, resulting in an EPSP

Answer 1

A). The opening of cation sensitive ion channels causes K to enter the cell, resulting in an IPSP ----à FALSE (K+ leakage causes IPSP, but not entry)

B. The opening of chloride sensitive ion channels results in an IPSP --à TRUE

C. The opening of cation sensitive ion channels causes Na to enter the cell, resulting in an EPSP ----à TRUE (Entry of sodium ions causes depolarization of the cell)

D. The opening of cation sensitive ion channels causes Ca to leave the cell, resulting in an EPSP ---à FALSE (leakage of calcium causes IPSP)