Final answer:
Nerve transmission involves the movement of sodium, potassium, and calcium ions across the cell membrane, resulting in an electrical impulse that propagates along the neuron.
Step-by-step explanation:
A nerve impulse is the propagation of an action potential along a cell membrane. It is an electrical phenomenon caused by the movement of electrolytes across the membrane. In the case of nerve transmission, the movement of sodium (Na+), potassium (K+), and calcium (Ca+2) ions plays a crucial role.
When a stimulus causes an action potential at one location, it changes the permeability of the adjacent membrane, allowing sodium ions to enter the cell and depolarize the membrane. This creates a wave of charge moving along the outside and inside of the membrane. Additionally, the opening of calcium channels further contributes to the depolarization of the membrane.
In summary, nerve transmission involves the movement of sodium, potassium, and calcium ions across the cell membrane, resulting in an electrical impulse that propagates along the neuron.