HMS, BM EQ-Bank 824 MC During a push-up exercise, which of the following muscles is primarily responsible for the upward phase of the movement? Biceps brachii Latissimus dorsi Rectus abdominis Pectoralis major Show Answers Only \(D\) Show Worked Solution D is correct: Pectoralis major contracts to push the body up. Other Options: A is incorrect: Biceps flex the elbow (lowering movement) B is incorrect: Latissimus dorsi is for pulling movements C is incorrect: Rectus abdominis stabilises, not primary mover