motoriyksikköön
Motoriyksikköön is a Finnish term that translates to "motor unit" in English. It refers to the fundamental functional unit of the neuromuscular system. A motor unit consists of a single motor neuron and all the muscle fibers it innervates. When a motor neuron receives a signal from the central nervous system, it fires an action potential, which travels down its axon to the muscle fibers. This signal causes the muscle fibers to contract, producing movement.
The number of muscle fibers within a motor unit can vary greatly. In muscles responsible for fine,
The recruitment of motor units is a key mechanism for controlling muscle force. When a weak contraction