Contrasting Muscle Motion Flashcards
Abduction
Movement of a limb away from the midline of the body
Adduction
Movement of a limb towards the midline of the body
Flexion
Decreasing the angle between two bones by bending a limb at the joint
Extension
Increasing the angle between two bones or the straightening out of a limb
Elevation
Raising or lifting a body part (levator - muscle that raises a body part)
depression
Act of lowering a body part
Rotation
Circular movement around an axis
Circumduction
Circular movement at the far end of a limb
Rotator muscle
Turns a body part on its axis (ex: humerus)
Rotator cuff
Group of muscles and their tendons that hold the head of the humerus securely in place as it rotates within the shoulder joint
Supination
Rotating the arm of the leg so that the palm of the hand or sole of the foot is turned forward or upward (carrying a bowl of soup)
Pronation
Rotating the arm or leg so that the palm of the hand or sole of the foot is turned downward or backward
Dorsiflexion
Bends the foot upward at the ankle
Plantar flexion
Bends the foot downward at the foot