Which of the following statement is not correct?

(1) During conduction of impulse, stimulus induced permeability to Na⁺ is extremely short-lived.

(2) Resting membrane potential of membrane at the site of excitation is maintained by influx of Na⁺.

(3) Na⁺ - K⁺ pump transports 3Na⁺ to outside and 2K⁺ to inside of axon.

(4) Neuron recognise information of nerve impulse but never transmit it.

(5) Positive charge on inner axonal membrane is due to efflux and influx of K⁺.

Statements (2), (4) and (5) are incorrect.

(1) During conduction of impulse, stimulus induced permeability to Na⁺ is extremely short-lived.

(2) Influx of Na⁺ occurs when a neuron is stimulated. Resting membrane potential is maintained by Na⁺-K⁺ pump and K+ leakage channels.

(3) Na⁺ - K⁺ pump transports 3Na⁺ to outside and 2K⁺ to inside of axon.

(4) Neurons can detect, receive and transmit different kinds of stimuli.

(5) Positive charge on inner axonal membrane is due to influx of Na⁺.