Final answer:
False, not every muscle fiber has its own neuromuscular junction; multiple muscle fibers are innervated by a single motor neuron, forming a motor unit.
Step-by-step explanation:
The statement that each individual skeletal muscle cell (fiber) requires its own unique neuromuscular junction (NMJ) is false. While it is true that every skeletal muscle fiber must be innervated by a motor neuron to contract, not every muscle fiber has its own individual NMJ. Instead, a single motor neuron can innervate multiple muscle fibers, creating a group or unit known as a motor unit. The size of a motor unit can vary: muscles that require fine motor control have smaller motor units with fewer muscle fibers, whereas muscles that generate larger forces may have larger motor units with more muscle fibers.