When a skeletal muscle contracts to cause a given movement, the more movable end of attachment of the muscle is called its ________.

A) origin
B) insertion
C) antagonist
D) synergist
E) fixator

Movable End

A term describing an object or part of a system that is free to move or be manipulated, often used in mechanical contexts.

Skeletal Muscle

A type of striated muscle tissue which is attached to bones and is responsible for the movement of the skeleton.

Insertion

More movable attachment point of a muscle; usually, the lateral or distal end of a muscle associated with the limbs; also called mobile end.