Citation:
An extensor is a type of skeletal muscle that serves to extend or straighten a joint, moving bones away from each other. Extensors work in opposition to flexor muscles, which bend joints and bring bones closer together.
A muscle that decreases the angle between two bones at a joint, essentially bending the joint.
Joint: A point where two or more bones meet in the body, allowing for movement and support.
A type of striated muscle tissue which is under voluntary control and is attached to bones, facilitating movement