If a muscle has an oblique line of pull across a biaxial joint,what is the maximum number of axial actions it can have,not counting possible reverse actions?

Question

Quizplus · Accepted Answer

A muscle with an oblique line of pull across a biaxial joint can have a maximum of two axial actions (e.g., flexion/extension and abduction/adduction) because its pull is directed in a way that influences movement around two axes.

If a Muscle Has an Oblique Line of Pull Across