Figure Q2-37 shows a whole-cell sodium current (bottom trace) elicited by stepping the membrane potential from -70 mV to 0 mV (top trace). The dashed line is 0 nA. Upon depolarizing the membrane, there is an inward current. This whole-cell current is a reflection of the cumulative activity of many individual ion channels. What is the probable state of an individual sodium channel at each point (A, B, and C)? Figure Q2-37

Question

Figure Q2-37 shows a whole-cell sodium current (bottom trace) elicited by stepping the membrane potential from -70 mV to 0 mV (top trace). The dashed line is 0 nA. Upon depolarizing the membrane, there is an inward current. This whole-cell current is a reflection of the cumulative activity of many individual ion channels. What is the probable state of an individual sodium channel at each point (A, B, and C)?  Figure Q2-37

Quizplus · Accepted Answer

The Answer of Figure Q2-37 shows a whole-cell sodium current (bottom trace) elicited by stepping the membrane potential from -70 mV to 0 mV (top trace). The dashed line is 0 nA. Upon depolarizing the membrane, there is an inward current. This whole-cell current is a reflection of the cumulative activity of many individual ion channels. What is the probable state of an individual sodium channel at each point (A, B, and C)?  Figure Q2-37

Figure Q2-37 Shows a Whole-Cell Sodium Current (Bottom Trace) Elicited