Answer:
The sodium-potassium pump
Explanation:
Nerve impulse transmission is an electrochemical phenomenon that occurs in nerve cells and makes the nervous system work. It is the result of changes in electrical charges in the membrane of neurons, cells specialized in information processing.
Electric charges move in neurons like ions, mainly sodium (Na +) and potassium (K +). These ions cross the plasma membrane of the neuron through protein channels and ion pumps, which are embedded in the phospholipid bilayer of the membrane.
The sodium-potassium pump inserted in the membrane moves the ions against their concentration gradient, it takes the sodium and puts the potassium inside the cell and for that there is an energy expenditure. For this reason, we can say that pumps and sodium and potassium are responsible for transmitting a nervous message from the fingertips to the brain.
