Because Muscles only pull not push
antagonistic muscles
the answer is when one muscle contracts the other relaxes
they are pairs of muscle that work together alternating. they need each other because no muscle can stretch a so the other mucle contracts.
Because muscle cells can only contract, not extend, skeletal muscles most work in pairs. While one muscle contracts, the other muscle in the pair relaxes to its original length.
Muscles can only exert force by getting shorter. Muscles work in pairs by one muscle pulling in one direction, the other muscle pulls in the opposite direction. One bends your leg, the other straightens the leg, etc.
Antagonistic muscle pairs work together to maintain balance and stabilize the body. When one muscle contracts, its antagonist muscle relaxes to allow movement. For example, the biceps and triceps work together to bend and straighten the arm, contributing to overall stability and posture.
When one muscle of a pair contracts, the other muscle of the pair relaxes to allow movement of the body part.
When one muscle of a pair contracts, the other muscle of the pair relaxes to allow movement of the body part.
Because muscle can only contracts. The only way for it to lengthen is by having an outside force, ie, another muscle's contraction.
Most muscles work in pairs, known as antagonistic pairs, where one muscle contracts while the other relaxes. However, some muscles, like the diaphragm, function independently to facilitate breathing without a direct opposing muscle. Additionally, certain muscles in the eye, such as the lateral and medial rectus, can also work in a more coordinated manner rather than strictly in pairs. Overall, while the majority of skeletal muscles operate in pairs, there are exceptions based on their specific functions.
They are the muscles. Muscles contract in pairs to move the parts across the joint. One muscle contract with more power. The opposite muscle contracts with less power and get stretched over to allow the first muscle to act.
ussually, one muscle in the pair bends part of the body.the other muscle straightens part of the body.