Synergistic muscles are muscles that have a similar and mutually helpful function or action. Mosby's medical dictionary defines synergistic muscles as groups of muscles that contract together to accomplish the same body ... More »

In muscle movement, the synergist is the muscle or group of muscles that stabilizes a joint around which the movement is occurring. The fixator is the muscle or group of muscles that stabilizes the origin of the primary ... More »

Shrugging of the shoulders is primarily accomplished by the upper region of the trapezius muscle. The upper trapezius extends from the shoulder blade up to the back of the neck and is a common target of weight training e... More »

In muscle movement, the synergist is the muscle or group of muscles that stabilizes a joint around which the movement is occurring. The fixator is the muscle or group of muscles that stabilizes the origin of the primary ... More »

The hip adductor muscles allow humans to draw their legs to the mid-line of the body, an action which is aptly named adduction. Other movements the hip adductors enable include transverse adduction, flexion, extension, a... More »

www.reference.com Science Human Anatomy Muscles

Muscles that cause two bones on two different sides of the joint to close, resembling a bending action, are called flexor muscles. However, each muscle has the ability only to pull, not to push, so muscles need to work i... More »

The Clermont College Biology Department lists examples of flexor muscles as the biceps brachii and the hamstrings, and some examples of extensor muscles are the triceps brachii, the quadriceps femoris and the gastrocnemi... More »