Two muscles that work against each other are called the

Two muscles that work against each other are called the

• A. Conjugate muscles
• B. Synergist
• C. Antagonistic pair
• D. Tendon

Answer: (C)

Movement at a joint is produced by muscles that work in opposite directions. When one muscle contracts to bend a joint, its partner in the pair relaxes or lengthens, allowing the movement to occur and then to be reversed. This opposing relationship forms an antagonistic pair, such as the biceps and triceps around the elbow, which enables flexion and extension and helps control the speed and range of motion. A tendon is just connective tissue that attaches a muscle to bone, not a muscle pair; a synergist assists the main mover but doesn’t oppose the action; conjugate muscles isn’t a standard term in this context.

Movement at a joint is produced by muscles that work in opposite directions. When one muscle contracts to bend a joint, its partner in the pair relaxes or lengthens, allowing the movement to occur and then to be reversed. This opposing relationship forms an antagonistic pair, such as the biceps and triceps around the elbow, which enables flexion and extension and helps control the speed and range of motion. A tendon is just connective tissue that attaches a muscle to bone, not a muscle pair; a synergist assists the main mover but doesn’t oppose the action; conjugate muscles isn’t a standard term in this context.