Chapter 7: Lesson 3 Flashcards
1
Q
Eccentric muscle action
A
A muscle action that occurs when a muscle develops tension while lengthening.
2
Q
Motor unit
A
A motor neuron and all of the muscle fibers that it innervates.
3
Q
Concentric muscle action
A
A muscle action that occurs when a muscle is exerting force greater than the resistive force, resulting in a shortening of the muscle.
4
Q
Isometric muscle action
A
When a muscle is exerting force equal to the force being placed on it leading to no visible change in the muscle length.
5
Q
Core
A
The structures that make up the lumbo-pelvic-hip complex (LPHC), including the lumbar spine, pelvic girdle, abdomen, and hip joint.
6
Q
Muscle action spectrum
A
The full range of eccentric, isometric, and concentric muscle contractions required to perform a movement.
