5 concepts
Force of Muscle Contraction
The force a muscle generates is dependent on its length and shortening velocity.
Velocity and Duration of Muscle Contraction
The shortening velocity affects the amount of force generated by a muscle.
Motor Units
The motor unit is the functional unit of muscle contraction and includes the motor nerve fiber and the muscle fibers it innervates.
Muscle Tone
Muscle tone is a measure of a muscle's resistance to stretching while in a passive resting state.
Types of Muscle Contractions: Isotonic and Isometric
Muscle contractions are defined by changes in the length of the muscle during contraction.