Agonist and antagonist muscles examples


agonist and antagonist muscles examples

Stabilizer, Neutralizer, Support, Synergist, Agonist, Antagonist Part 1

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Muscles are described using unique anatomical terminology according to their actions and structure. Skeletal striated muscle , or "voluntary muscle", primarily joins to bone with tendons. Skeletal muscle enables movement of the bones of the human skeleton and maintains posture. Smooth muscle tissue is found in parts of the body where it conveys action without conscious intent. The majority of this type of muscle tissue is found in the digestive and urinary systems where it acts by propelling forward food, chyme , and feces in the former and urine in the latter. Other places smooth muscle can be found are within the uterus , where it helps facilitate birth, and the eye , where the pupillary sphincter controls pupil size. Cardiac muscle is specific to the heart.

Each of the major muscles involves in movement exists in a muscle relationship. In order to produce movement different muscles have different functions, which when done together produces the wanted movement. For example, muscles work in relationship to abduct the arm or to flex the knee. Another example of the agonist antagonist muscle relationship. For any movement there are various muscles that may function as: the prime mover or agonist, the antagonist, synergists, or stabilisers. This means a synergist muscle is also an agonist muscle.

Skip to content. Skip to navigation. When it comes to training your personal training clients then understanding the different types of contractions that a muscle can perform is vital. It will help you ensure your programme designs are specific to your clients ability and goals as well as keeping them safe with good technique. Muscle contractions are classified according to the movements they cause and in fitness we are primarily concerned with the following three types of contraction:. Many skeletal muscles contract isometrically in order to stabilise and protect active joints during movement.

Although a number of muscles may be involved in an action, the principal muscle involved is called the prime mover , or agonist. Because it can be assisted by the brachialis, the brachialis is called a synergist in this action Figure Figure The brachoradialis, in the forearm, and brachialis, located deep to the biceps in the upper arm, are both synergists that aid in this motion. A muscle with the opposite action of the prime mover is called an antagonist. Antagonists play two important roles in muscle function: 1 they maintain body or limb position, such as holding the arm out or standing erect; and 2 they control rapid movement, as in shadow boxing without landing a punch or the ability to check the motion of a limb. For example, to extend the leg at the knee, a group of four muscles called the quadriceps femoris in the anterior compartment of the thigh are activated and would be called the agonists of leg extension at the knee.

Muscle relationship

Most people think that a muscle performs ONE particular and very defined role and that they always perform this role. - In this short blog post, I just want to bring your attention to some commonly used lingo to make you a more informed climber. But first, here are a few other clarifications.




  1. Agar G. says:

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  2. Ashley G. says:

    11.1 Describe the roles of agonists, antagonists and synergists

  3. Davet L. says:

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  4. Isidora T. says:

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