Types of Body Movements

Video http://www.youtube.com/watch?v=5YcNAPzDxDg

Flexion You will need to know the action or movement performed for each of the muscles we study. The first type of movement is called flexion. Note the lower leg is being flexed in this diagram. During flexion the angle of joint is decreased. As the knee is flexed, the angle between the lower leg and the thigh is decreased. Flexion of the upper arm is also illustrated in this diagram. Here the angle between the arm and the frontal plane is decreased.

Extension Extension is the opposite of flexion. In extension the angle of a joint is increased. Extension of the lower leg causes an increased angle between the lower leg and the thigh.  

Hyperextension Flexion and extension also apply to the neck. When a joint is extended past the anatomical position the movement is called hyperextension.

Abduction, Adduction & Circumduction Abduction refers to moving away from the median plane of the body. Adduction is the opposite movement to abduction. It is moving toward the medial plane. Circumduction refers to inscribing a circle while moving a limb.

Rotation Rotation is turning a bone on its own axis. Moving the head back and forth to indicate “no” is an example of rotation. Note the difference between medial and lateral rotation. In lateral rotation the limb is rotated the lateral side of the body. Medial rotation rotates the limb toward the medial side of the body.

Inversion & Eversion

Pronation & Supination

Opposition

Elevation & Depression

Protraction Retraction

Dorsiflexion & Plantar Flexion

Radial flexion & Ulnar flexion

Body Movements Anterior View circumduction abduction of arm adduction of arm supination pronation abduction of leg inversion eversion adduction of leg

Body Movements Lateral View flexion of neck hyperextension of neck flexion at wrist extension at wrist flexion at elbow extension at elbow flexion of leg flexion/extension of knee dorsiflexion plantar flexion

Number paper 1 – 20. Body Movements Quiz http://www.youtube.com/watch?v=cLrl-_BOJ4g Number paper 1 – 20.

Body Movement Description In your notebook, describe the following movements: Getting up out of your bed in the morning Doing a jumping jack Bending down to pick up something you dropped A ballet dancer does a plie, then stretches one leg out to the side and points her toe. Then she pulls her leg down and brings both feet to the front. While walking away from a two-story house, your friend calls out to you to say goodbye from an upstairs window. You turn to look and them and wave.