Neurology questions

Only answer if you have a good knowledge of this.

Answer the 3 following:

1- If in a neuron, E_Na= 40mV andE_k= -80mV, Which of the following has a higherprobability of being the E_m value?

a) 40

b) -80

c) -20

d) -70

Explain your answer:

2- On the laboratory about 'the membrane restingpotential' two simulations were made. On the first one the internalconcentration of potassium was decreased, and in thesecond one, the externalconcentration was increased. Which of the following statementsdescribes best what was observed?

a) There was no change in the voltage of the membrane

b) The decrease in the internal concentration of potassiumchanged the voltage of the membrane and it was less than the changefrom the increase of the external concentration of potassium

c) The decrease in the internal concentration of potassiumchanged the voltage of the membrane and it was greater than thechange from the increase of the external concentration ofpotassium

d) In both simulations, the voltage of the membrane was thesame

Explain your answer:

3- When working with the action potential, by alteringthe parameters of the amplitude, we were manipulating:

a) The current

b) The voltage of the membrane

c) The membrane permeability

d) The distribution of ions

Explain your answer: