What to look for in a prenatal vitamin. Prenatal vitamins are available by both over-the-counter and by prescription. Although formulations can vary from brand to brand, these are the most important vitamins and minerals to look for:
Muscle pairs. Antagonistic pairs of muscles create movement when one (the prime mover) contracts and the other (the antagonist) relaxes. Examples of antagonistic pairs working are: 1  the quadriceps and hamstrings in the leg.2  the biceps and triceps in the arm.uscle pairs. Antagonistic pairs of muscles create movement when one (the prime mover) contracts and the other (the antagonist) relaxes. Examples of antagonistic pairs working are: 1  the quadriceps and hamstrings in the leg.
anon272083. Post 5. A synergist muscle joins in and assists the prime mover; it is not a stabilizer! A fixator helps maintaining a stable position. The antagonist muscle (in relation to the prime mover) relaxes, as muscles tend to work in pairs-one side contracts as the opposite side relaxes.lchemy. Post 3. @ Fiorite-Think of the terms synergist and agonist as a descriptor that describes the purpose of the muscle it is referred to. A synergist muscle can be the same as an agonist,or it can work with an agonist to perform a similar function. A synergist muscle prevents a muscle from oversextnding.