Sodium potassium pumps of axolemma transports

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2Na⁺ outwards for 3K⁺ inwards by passive transport

3Na⁺ inwards for 2K⁺ outwards by active transport

3Na⁺ outwards for 2K⁺ inwards by active transport

2Na⁺ inwards for 3K⁺ outwards by passive transport

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Detailed Solution

The sodium-potassium pump, is a protein embedded in the cell membrane of neurons. It actively transports sodium ions (Na⁺) out of the neuron while simultaneously bringing potassium ions (K⁺) into the neuron. This transport occurs against their respective concentration gradients, requiring energy in the form of adenosine triphosphate (ATP).

The ratio of ions transported by the pump is indeed 3 sodium ions out for every 2 potassium ions in. This pump is essential for maintaining the resting membrane potential of the neuron and ensuring that the proper ion gradients are established across the cell membrane. These gradients play a significant role in generating and propagating action potentials, which are the electrical signals used by neurons to communicate.

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