Term
|
Definition
muscles that are primarily responsible for producing a particular movement; provides major force
ex. biceps brachii (prime mover of forearm flexion) |
|
|
Term
|
Definition
reverses action of agonists; muscles that oppose or reverse a movement; regulate the prime move by providing resistance to prevent overshoot or to stop its action
ex. triceps brachii (antagonists of biceps brachii-prime mover of forearm extension) |
|
|
Term
|
Definition
aid the action of agonists by reducing undesirable or unnecessary movement
ex. brachioradialis (synergist of biceps brachii) |
|
|
Term
| Fixators [fixation muscles] |
|
Definition
specialized synergists; immobilize the origin of a prime mover so that all the tension is exerted at the insertion. Muscles that help maintain posture are fixators.
*fix other joints to perform certain action
ex. muscles that maintain posture |
|
|
Term
|
Definition
- direction of muscle fibers
- relative size of the muscle
- location (some are named for the bone it is associated with)
- number of origins
- location of the muscle's origin and insertion
- shape
- action
|
|
|
Term
|
Definition
| The end of the muscle that is attached to the bone that moves more |
|
|
Term
| Antagonists and synergists work with agonists to... |
|
Definition
| produce smooth coordinated and precise movements. |
|
|
