Although muscle attachment points are conservative in living vertebrates, their positions and capabilities can vary because their lines of action change as the shapes, proportions, and orientations of the bones are modified in different groups of vertebrates.

尽管现存脊椎动物的肌肉附着点是保守的，但它们的位置和能力可能会有所不同，因为它们的作用线会随着骨骼的形状、比例和方向在不同脊椎动物群中发生变化而发生变化。