Answer: Option A
:
A
The Sodium potassium pump and the K⁺ leakage channels are responsible for establishing and maintaining the resting membrane potential. The K⁺ leakage channels allow the primary positive ion in the cell to diffuse out along its chemical gradient, and the sodium potassium pump transporting 2 positive ions inside for every 3 positive ions thrown outside also help establish the electric potential of a resting neuron. Neurons do not have Na+ leakage channels and the ligand gated sodium channels play a role in depolarisation of the neuron and voltage gated calcium channels in synaptic transmission.