NEETZoologyNeural Control and Coordination
What type of ions are present in high concentration inside the axon when a neuron is resting?
Options
- ASodium ions
- BPotassium ions
- CNegatively charged proteins
- DAll of the above
Correct answer
B. Potassium ions
Step-by-step solution
The electrical potential difference across the resting plasma membrane is called as the resting potential . The outer surface of the axonal membrane possesses a positive charge while its inner surface becomes negatively charged. Neurons are excitable cells because their membranes are in a polarised state, meaning the electrical potential difference across the membrane is maintained by ionic gradients.The outer surface of the axonal membrane possesses a positive charge while its inner surface becomes negatively char