A muscle that opposes the action of another; the biceps and triceps are antagonistic muscles.
antagonist muscle muscles or muscle groups which neutralize action of another muscle or muscle group (see antagonist; muscle contraction). Antagonist and agonist muscles often occur in pairs, called antagonistic pairs. As one muscle contracts, the other relaxes. An example of an antagonisic pair is the biceps and triceps; to contract-the triceps relaxes while the biceps contracts to lift the arm. Antagonist. An antagonist is a muscle that is capable of opposing the movement of a joint by producing torque that is opposite to a certain joint action. This is usually a muscle that is located on the opposite side of the joint from the agonist. The primary role of the antagonist is to move in contrast to the agonist. As the agonist shortens the antagonist lengthens and vice versa. When performing a bicep curl, the bicep is the agonist in the contraction and the tricep is the antagonist. Agonist is a classification used to describe a muscle which causes specific movement or several movements through the process of contraction. This is a term for skeletal muscles, usually. When you bring the hand toward the shoulder, the biceps is the agonist muscle and the triceps is the antagonist muscle. In the last newsletter, we discussed the elements of alignment. I hope that you have had the opportunity to focus on your alignment both in and out of the hot room. antagonistic muscle - (physiology) a muscle that opposes the action of another; the biceps and triceps are antagonistic muscles. muscle, musculus-one of the contractile organs of the body. agonist-a muscle that contracts while another relaxes; when bending the elbow the biceps are the agonist. Common pairs of antagonist and agonist muscles exist. In the upper body, the biceps and triceps work to complete actions related to movement of the arm. The quadriceps and hamstrings in the upper leg work to help move the knee joint and perform exercises, such as squats and leg extensions. For example, the tricep is the antagonist during a bicep curl, but the roles of the muscles are reversed when performing a tricep pressdown. Here the tricep is the agonist as it shortens with the concentric contraction and the bicep becomes the antagonist, lengthening to allow the tricep to shorten. The biceps and the triceps are antagonistic muscles. when the biceps muscle contracts, the forearm moves up. when the triceps muscle contracts, the forearm moves down. This solves the problem. To lift the forearm, the biceps contracts and the triceps relaxes.
http://medical-dictionary.thefreedictionary.com/agonist+muscle https://en.wikipedia.org/wiki/Antagonist_(muscle) http://www.gustrength.com/kinesiology:what-is-anagonist-antagonist-stabilizer-fixator http://livehealthy.chron.com/antagonist-muscle-do-1843.html http://www.answers.com/Q/What_is_an_agonist_muscle http://shywmobile.com/2014/11/01/how-agonist-antagonist-muscles-work-yoga/ http://www.thefreedictionary.com/antagonistic+muscle http://www.wisegeekhealth.com/what-are-the-differences-between-antagonist-and-agonist-muscles.htm http://livehealthy.chron.com/antagonist-muscle-do-1843.html http://www.bbc.co.uk/bitesize/ks3/science/organisms_behaviour_health/life_processes/revision/8/
what is the antagonist in muscles