Chapter 32, Skeletal, Muscular, and Integumentary Systems - Assessment - 32.2 The Muscular System - Understand Key Concepts - Page 942: 18

When we say that skeletal muscles work in opposing pairs, we mean that the contraction of one muscle of the pair moves a bone in one direction and the contraction of the other moves the bone in another direction. Thus, their actions have opposite effects.

When we say that skeletal muscles work in opposing pairs, we mean that the contraction of one muscle of the pair moves a bone in one direction and the contraction of the other moves the bone in another direction. Thus, their actions have opposite effects.