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Describe the action of your muscles when you bend your arm and then straighten it again?
The muscles in your arm never expand; so when you bend your arm, your biceps contract as your triceps return to their regular form. When you extend your arm, you triceps contract as your biceps return to their regular form.
When flexing the elbow which muscle is concentrically contracting?
When flexing the elbow, the primary muscle that is concentrically contracting is the biceps brachii. This muscle shortens as it contracts, pulling the forearm upward towards the shoulder. Other muscles, such as the brachialis and brachioradialis, also assist in the flexion but the biceps brachii is the most prominent.
How do muscles in your arm work together?
When you flex your arm your biceps contract, and your triceps extend. And when you unflex your arm the triceps contract and you biceps extend. The muscles work together to allow you to move your body.
When you move the muscles of your lower arm which muscles of your body contract and relax?
biceps and triceps respectively
When the arm is streched the biceps muscles become while the triceps muscles become?
The triceps be retact and contract
Muscle that has an action opposite to that of another muscle?
The biceps and triceps. When the biceps contract, the triceps relax. If you can flex it, there's an opposite action happening somewhere.
What muscles contract and extend?
Muscles contract and extend primarily through the action of skeletal muscles, which work in pairs. When one muscle, called the agonist, contracts, its counterpart, the antagonist, relaxes to allow movement. For example, during arm flexion, the biceps brachii contracts while the triceps brachii extends. This coordinated action enables smooth and controlled movements in the body.
What two muscles are antagonists to themselves with flexion and extension?
The two muscles that act as antagonists to themselves during flexion and extension are the biceps brachii and triceps brachii. When the biceps contract to flex the elbow, the triceps relax, and when the triceps contract to extend the elbow, the biceps relax. This interplay allows for smooth movement and control of the arm.
What muscles contract and relax when you move a certain way?
When you move a certain way, various muscle groups contract and relax to facilitate the movement. For example, during a bicep curl, the biceps brachii contracts to lift the weight, while the triceps relax to allow for the bending of the elbow. Conversely, when lowering the weight, the triceps contract to extend the elbow, and the biceps relax. This coordinated action of agonist and antagonist muscles enables smooth and controlled movements.
Do all muscles must contrast for movement?
No, not all muscles must contract for movement. While many movements involve the contraction of muscles to create force, some movements can occur through the relaxation of certain muscles, allowing opposing muscles to contract. For example, when bending the arm, the biceps contract while the triceps relax. Therefore, coordinated muscle action, including both contraction and relaxation, is essential for smooth movements.
How do the biceps and triceps muscles depend on each other for movement?
The biceps and triceps muscles work in opposition to each other to facilitate movement in the arm. The biceps, located at the front of the upper arm, are responsible for flexing the elbow, while the triceps, located at the back, are responsible for extending it. When the biceps contract to lift the forearm, the triceps must relax to allow this movement, and vice versa when extending the arm. This coordinated action is essential for smooth and controlled movements of the arm.
How do muscles bring about movement in an organism?
Contraction of the biceps and the relaxation of the triceps bend the arm .In straightening the arm the triceps contract and the biceps relax
