Muscle Actions

Question 1

3 types of muscle actions

Answer 1

Isotonic, isometric, & isokinetic

Question 2

Eccentric Muscle Action

Answer 2

A muscle action that occurs when a muscle develops tension while lengthening

Question 3

Motor Unit

Answer 3

A motor neuron & all off the muscle fibers that it innervates (supplies with nerves)

Question 4

Concentric Muscle Action

Answer 4

A muscle action that occurs when a muscle is exerting force greater than the resistive force, resulting in a shortening of the muscle

Question 5

Isometric Muscle Action

Answer 5

When a muscle is exerting force equal to that force being placed on it leading to no visible change in the muscle length

Question 6

Core

Answer 6

The structure that makes up the lumbo-pelvic-hip complex (LPHC), including the lumbar spine, pelvic girdle, abdomen, & hip joint

Question 7

Isokinetic

Answer 7

The muscle shortens at a constant speed over the full ROM

Question 8

Muscle Action Spectrum

Answer 8

The full range of eccentric, isometric, & concentric muscle contractions required to perform a movement