Muscles bend and flex by moving the arm to pick up an object or even Weightlifting.
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This type of muscle contracts to bend a limb at a joint
Muscles that bend a joint are flexors; musces that straighten a joint are extensors.
The quadriceps muscle helps straighten and extend the leg and the hamstring helps bend the knee.
Skeletal muscles move bones. A pair of muscles is required to move a bone -- one muscle to straighten the joint, and another to bend the joint.
A flexor is a muscle that causes a joint to bend. In contrast, an extension is a muscle that straightens a joint.
The muscle that causes a joint to straighten when it contracts are the extensor muscles. These include the triceps that work with the biceps to extend the arm.
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A muscle that straightens a joint is called an extensor.Extensors are the muscles whose contraction extends or straightens a limb or other part of the body.Extensor muscle
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