HP 2306 Chapter Notes - Chapter 13: Muscle Contraction, Transverse Plane, Gluteus Medius Muscle

• School: Baylor University
• Department: Human Performance
• Course: HP 2306
• Professor: Shearer

Document Summary

Unit 2 chapter 13 : how muscles function the big picture. Section 13. 1 big picture" of muscle structure and function. If the muscle is successful in shortening toward its center, then one or both of the bones to which it is attached will have to move: muscles can cause movements of parts of the body. Concentric contraction : when a muscle contracts and shortens the muscle: mover : the muscle that is concentrically contracting. Isometric contraction / eccentric contraction : when a muscle contracts but does not shorten. Three possible scenarios occur during concentric contractions: bone a is pulled toward bone b, bone b is pulled toward bone a, both bone a and bone b will be pulled toward each other. When a muscle contracts, its freest attachment moves. If an attachment of the muscle moves, it is said to be the mobile attachment.