Antagonist If you consider the first action as the knee bending, the hamstrings would be called the agonists and the quadriceps femoris would then be called the antagonists. Valgus And Varus Knee Patterns And Knee Pain. 11.1 Describe the roles of agonists, antagonists and synergists Brachioradialis. On the Origin of Muscle Synergies: Invariant Balance in the Co The muscle fibers course inferiorly down the radial part of the anterior forearm, forming a thick tendon in approximately the middle of the forearm. Bones and joints. Lever systems in the human body are classified based on the arrangement pattern of the fulcrum, resistance, and the applied force (Figure \(\PageIndex{4}\)). Cael, C. (2010). Q. antagonist: triceps brachii, extensor carpi radialis longus (extends wrist), synergist: ecrb, ecu Arm Muscles - Action, Antagonist, Synergist Flashcards | Quizlet 17 terms. Also involved is the brachioradialis which assists the brachialis, and is also considered a synergist. 2. [1] [2] It is also capable of both pronation and supination, depending on the position of the forearm. Figure \(\PageIndex{1}\): Prime Movers and Synergists. Lice nse: CC BY-SA: Attribution-ShareAlike, Figure \(\PageIndex{2}\):. Jana Vaskovi MD During forearm flexion (bending the elbow), such as lifting a cup, a muscle called the biceps brachii is actually the prime mover; however, because it can be assisted by the brachialis, the brachialis is called a synergist in this action (Figure \(\PageIndex{1}\)). If a question does not contain a vocabulary word from the lesson's word list, use one in your answer. Synergist muscles act around a movable joint to produce motion similar to or in concert with agonist muscles, allowing for a range of possible movements.