Membrane and Action potentials

Question 1

__________ is the ion concentration difference on the two sides of the membrane.

Answer 1

Diffusion Potential

Question 2

The formula considering one particular ion at a time through the membrane is the ______.

Answer 2

Nernst

Question 3

In the normal mammalian fiber, the potential difference required for ______ is negative 94 mV.

Answer 3

Potassium ions

Question 4

In the normal mammalian fiber, the potential difference required for sodium ions is positive ____mV

Answer 4

61

Question 5

The value for _________ is negative 90 mV.

Answer 5

Resting membrane potential

Question 6

__________ is the phase in an action potential brought about by the influx of sodium ions leading to a more positive charge.

Answer 6

Depolarization

Question 7

__________ is the phase in an action potential brought about by the efflux of potassium ions leading to a more negative charge until the resting membrane potential is reached.

Answer 7

Repolarization

Question 8

The potential required to be achieved in order to successfully elicit an action potential is called the ______

Answer 8

Threshold potential

Question 9

Among the two voltage_gated channels in action potential, the channel that is slower in response is the voltage-gated______ channel.

Answer 9

Potassium

Question 10

During the _______ refractory period, no matter how strong the second stimulus is, no second action potential can be produced.

Answer 10

Absolute