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KembaraXtra - Medical Terms - action potential
An action potential is the rapid change in electrical voltage that occurs across the membrane of a nerve cell or muscle cell when a nerve impulse is generated. This electrical event represents the fundamental mechanism by which signals are transmitted within the nervous system and between nerve and muscle cells.
The process occurs when charged particles, particularly sodium and potassium ions, move across the cell membrane. This movement causes depolarization followed by repolarization, creating a brief electrical signal that travels along the nerve fibre. Action potentials allow the body to transmit information quickly, enabling functions such as muscle movement, sensory perception, and communication between different parts of the nervous system.
An action potential is the rapid change in electrical voltage that occurs across the membrane of a nerve cell or muscle cell when a nerve impulse is generated. This electrical event represents the fundamental mechanism by which signals are transmitted within the nervous system and between nerve and muscle cells.
The process occurs when charged particles, particularly sodium and potassium ions, move across the cell membrane. This movement causes depolarization followed by repolarization, creating a brief electrical signal that travels along the nerve fibre. Action potentials allow the body to transmit information quickly, enabling functions such as muscle movement, sensory perception, and communication between different parts of the nervous system.
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