When one muscle pulls, the other muscle relaxes.
antagonistic muscles
they are pairs of muscle that work together alternating. they need each other because no muscle can stretch a so the other mucle contracts.
Heart muscle, or cardiac muscle, is not described as an antagonistic muscle because it functions differently from skeletal muscles, which work in pairs to create movement. Instead of opposing actions, cardiac muscle fibers contract rhythmically and simultaneously to pump blood throughout the body. This coordinated contraction is essential for maintaining a consistent heartbeat, ensuring efficient blood circulation without the need for antagonistic pairs.
Because muscle can only contracts. The only way for it to lengthen is by having an outside force, ie, another muscle's contraction.
which two pairs of muscles are antagonistic pairs?
Antigonistic Pairs- The meaning of an antagonistic pair is only one muscle can work at a time. For Example: Biceps and Triceps (in your arm)
ussually, one muscle in the pair bends part of the body.the other muscle straightens part of the body.
they are called antagonistic muscles.
Antagonistic pair is a combination of agonist and antagonist muscles that only one contracts and the other one relaxes. The biceps in a human body are an example of it.
When one muscle pulls, the other muscle relaxes.
Skeletal Muscles
Muscles cannot push, they can only pull which means they work in pairs in order to move, this is known as antagonistic pairs. For example with a bicep curl you have the agonist/ prime mover (Bicep) and the antagonist/ Opposing muscle group (Triceps). As the agonist contracts it pulls the antagonist which relaxes.