Answer:
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Explanation:
flexors work to bend a joint. You may recognize a common exercise term right in the word "flex." When you flex your muscles, your flexors contract and pull on the bone, creating a bending movement of the joint.
Extensors serve the opposite purpose -- extending and straightening joints. In a bicep curl, the extensor muscles contract as the fist is let down from the shoulder. The same occurs with walking or running, as hip extensors contract and pull the thigh back to the anatomical position.
Flexor - Bicep, pectoralis major (upper limb flexors) and the psoas major and iliacus muscle, and brachialis.
Extensor - Tricep, biceps femoris, gluteus maximus, and quadriceps of the lower limb.
