NEETZoologyNeural Control and Coordination
What happens after the rise in permeability to Na⁺ in a neuron?
Options
- AThe permeability to K⁺ increases.
- BThe polarity of the membrane remains unchangeD)
- CThe resting potential of the membrane decreases
- DThe permeability to Na⁺ decreases
Correct answer
A. The permeability to K⁺ increases.
Step-by-step solution
The action potential is generated in response to a stimulus and travels along the length of the axon, transmitting the nerve impulse. The rise in permeability to Na⁺ is short-lived and is followed by a rise in permeability to K⁺. K⁺ diffuses outside the membrane, restoring the resting potential of the membrane. A synapse is a junction between two neurons that allows the transmission of a nerve impulse from one neuron to another. The two types of synapses are electrical synapses and chemical synapses. Electrical syn