Which of these muscle respectively flex and straighten our arm: Muscle Contraction Physiology Mcqs January 7, 2020 BILAL KHATTAK0 A.Biceps and triceps B.Adductors and abductors C.Pronators and suppinators D.None of these Related Mcqs: Which of these are examples of antgonistic muscles in our body: Upwards and downwards rotation of body parts is done by: Flexing or bending of our arm is done by: Which of the following muscle is an antagonistic member of Biceps brachii?? Straightening of our flexed arm is done by: Pin-worms, muscle-worms, hook-worms, whip-worms, guinea-worms and muscle-worms belong to group: During muscle contraction: The contraction of of a muscle is caused by: In which of these conditions the muscle offers no contraction: Chief source of energy for muscle contraction is: