Flexors decrease the angles . Extensorsincrease the angles.
decreasing the angle of a joint is called flexion. this occurs many many places in the body. a specific group of muscle is responsible for this at each joint.
Rotation and supination do not increase or decrease the angle between bones.
Flexion decreases the angle between two bones in a joint. Extension increases that angle.
Flexion is the general term for movements that decrease the angle between two bones; however, in the sagittal plane, the special term "adduction" is used for movements that decrease the angle between the limb and the midline.
Concentric isometric contraction
muscles help bones move or do anything
Flexion is movement during which the knees or elbows are bent to decrease the angle of the joint
Muscles are attached to two different bones. When a muscle contracts, it shortens. When it shortens, the shortens the angle between the two bones causing movement.
In normal anatomy, flexion is the movement that decreases the angle between the bones that form a joint. A pathological decrease within the joint of the distance between two bones may be termed a "loss of joint space."
muscles move but bones do not
flexion decreases in angle between articulating bones extension increases in angle between articulation bones
There are muscles attached to bones, but bones do not have muscles.
The muscles hold the bones up, and the bones back up the force of the muscles.