From nerve signal to contraction When an action potential reaches the motor neuron terminal, voltage-gated calcium channels open, triggering ACh release into the cleft. ACh binds to receptors on the ...

The formation and maintenance of neuromuscular junctions are activity-dependent processes. This means that, without regular stimulation, grafted motor neurons may survive but are unlikely to form ...

MIT scientists find that motor neuron growth increased significantly over 5 days in response to biochemical (left) and mechanical (right) signals related to exercise. The green ball represents cluster ...

From the microscopic dance of actin and myosin to the full-body power you feel in a workout, muscle contraction is a precise, coordinated process. It starts with a nerve signal, triggers calcium ...