Question

Which of these has the highest permeability in a resting nerve cell?​

Answer 1

Answer:

K+ has the highest permeability in resting nerve cells.

The membrane is permeable to K+ at rest because many channels are open. In a normal cell, Na+ permeability is about 5% of the K+ permeability or even less, whereas the respective equilibrium potentials are +60 mV for sodium (ENa) and −90 mV for potassium (EK)

Answer 2

The complete question is

Which of these has the highest permeability in a resting nerve cell?

a) Na+

b) Cl–

c) I–

d) K+

The correct answer is

option d) K+

K+ has the very best permeableness in resting vegetative cells.

Most of the particle channels open within the membrane of a resting nerve cell are selective for metal, mentioned as potassium leak channels.

• The resting membrane potential of a neuron is the electrical potential within the cell relative to the adjacent animate thing space.
• The dominant ion in setting the resting membrane potential is potassium.
• the metal electrical phenomenon accounts for about 20% of the resting membrane conductance in striated muscle and accounts for many of the resting conductance in neurons and nerve fibres.
• K+ ion is effectively smaller than Na+.
• Each particle carries water of association with it. the dimensions of K+ ion with its water of hydration are smaller than Na+ ion with its water of hydration.
• By manner of ion channels, nerve cells can perform their functions.
• These channels pump K+ into the nerve cells, kicking Na+ out, so, essentially, they work against every other.
• once the metal channels open, the potassium rushes in, creating the cell additional positive, which then stimulates the closing of the potassium channel and gap of the metal channel.

#SPJ6