Motor Unit
A motor neuron and all the muscle fibers it innervates.
Updated
A motor unit consists of one motor neuron and all the muscle fibers it controls. When the neuron fires, all its fibers contract. Motor units vary in size: small units (few fibers) for fine control, large units (many fibers) for powerful movements. Strength gains occur partly through improved motor unit recruitment and firing rate.
Examples
- Small motor units in eye muscles
- Large motor units in quads
- Learning to recruit more motor units
Common questions
What is Motor Unit?
A motor neuron and all the muscle fibers it innervates. A motor unit consists of one motor neuron and all the muscle fibers it controls.
What are examples of Motor Unit?
Small motor units in eye muscles; Large motor units in quads; Learning to recruit more motor units.
Put it into practice
12-Week Muscle Building · £29
A 12-week, four-day hypertrophy plan in three phases, with a modest calorie surplus