Cha. 7 - Muscle Actions & Functional Anatomy Of Muscles

Question 1

What is an Isotonic action?

Answer 1

Force is produced, muscle tension is developed, and movement occurs through a given range of motion

Isotonic muscle actions are subdivided into concentric and eccentric muscle actions

Question 2

What is muscle action spectrum?

Answer 2

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

Question 3

What is an agonists?

Answer 3

The primary muscles providing force for a movement

Question 4

What are Synergists?

Answer 4

Muscles that assist agonists to produce a movement?

Question 5

What are stabilizers?

Answer 5

Muscles that contract isometrically to stabilize the trunk and joints as the body moves

Question 6

What is Feed-forward activation?

Answer 6

When a muscle is automatically activated in anticipation of a movement

Question 7

What are Antagonists?

Answer 7

Muscles on the opposite side of a joint that are in direct opposition of agonist muscles