A depression or a groove found on the surface of an organ or tissue, as on the surface of the brain separating adjacent convolutions. Large sulci that divide the brain into lobes as well as the two hemispheres are more often called fissures. Plural: sulci. See fissure. calcarine sulcus See calcarine fissure.
Definition of SYNERGIST. : something (as a chemical or a muscle) that enhances the effectiveness of an active agent; broadly: either member of a synergistic pair.ADVERTISEMENT.noun synÂ·erÂ·gist \-jÉst\. something (as a chemical or a muscle) that enhances the effectiveness of an active agent; broadly: either member of a synergistic pair. ADVERTISEMENT.
1. Describe the actions of prime movers (agonists), antagonists, synergists, and fixators. 1. prime movers (agonists) - muscles that have the major responsibility for producing a specific movement. example-biceps brachii is prime mover of forearm flexion.2. antagonists-muscles that oppose or reverse a particular movement.escribe the actions of prime movers (agonists), antagonists, synergists, and fixators. 1. prime movers (agonists) - muscles that have the major responsibility for producing a specific movement. example-biceps brachii is prime mover of forearm flexion.