With a series of nearly identical compounds, we sometimes delay the final term of the final term until the last instance, allowing the hyphen to act as a kind of place holder, as in. 1  The third- and fourth-grade teachers met with the parents. 2  Both full- and part-time employees will get raises this year.
The functions of a fixator muscle is the stabalizing of the orgin of the prime mover so that the prime mover can act more efficiently.
The function of a fixator muscle is to stabilize the origin of the agonist muscle so that it can move efficiently. Other muscles, known as synergist muscles, stabilize muscle movements to keep them even, and control the movement so that it falls within a range of motion which is safe and desired.