antagonistic muscles

pairs of muscles (or muscle groups) that oppose each other in function. For example, the biceps flexes the arm at the elbow, whereas the opposing triceps straightens the arm.

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Psychology term of the day

March 15th 2025

helplessness

n. a state of incapacity, vulnerability, or powerlessness associated with the perception that one cannot do much to improve a negative situation that has arisen. Theorists have suggested that helplessness underlies various forms of anxiety, dependence, withdrawal, and demoralization. See also coping potential; learned helplessness. —helpless adj.