Source: Arm Muscles; Public Domain: http://commons.wikimedia.org/wiki/File:Arm_muscles_front_deep.png
When an opposing muscle on the opposite side of a joint contracts to create an opposing movement to its muscle counterpart (example flexion vs. extension).
The fixed, moveable end of a skeletal muscle.
An area where two or more bones come together.
The fixed, non-moveable end of a skeletal muscle
The nervous system controlling muscle groups that oppose and work against one another; allows for a variety of movements and protection of joints.
When a group of muscles work together to create the same movement; an example would be your bicep brachii and brachialis muscle contraction simultaneously to create flexion (bending) of your elbow.
A tough band of fibrous connective tissue that usually connects muscle to bone.