Chapter 5 – Human Movement Science Flashcards
Biomechanics
The science concerned with the internal and external forces acting on the human body and the effects produced by these forces.
Superior
Positioned above a point of reference.
Inferior
Positioned below a point of reference.
Proximal
Positioned nearest the center of the body or a point of reference.
Distal
Positioned farthest from the center of the body or a point of reference.
Anterior
On the front of the body.
Posterior
On the back of the body.
Medial
Positioned near the middle of the body.
Lateral
Positioned toward the outside of the body.
Contralateral
Positioned on the opposite side of the body.
Ipsilateral
Positioned on the same side of the body.
Anatomic position
The position with the body erect, the arms at the sides, and the palms facing forward. It is the base for all anatomic terminology.
Sagittal plane
An imaginary bisector that divides the body into left and right halves; flexion and extension; lateral/medial.
Flexion
A bending movement in which the relative angle between two adjacent segments decreases.
Extension
A straightening movement in which the relative angle between two adjacent segments increases.
Hyperextension
Extension of a joint beyond the normal limit or range of motion.
Frontal plane
An imaginary bisector that divides the body into front and back halves; adduction/abduction, lateral flexion, eversion/inversion; Anterior-Posterior.
Abduction
A movement in the frontal plane away from the midline of the body.
Adduction
A movement in the frontal plane toward the midline of the body.
Transverse plane
An imaginary bisector that divides the body into top and bottom halves; internal Rotation/external Rotation, horizontal adduction/horizontal abduction, pronation/supination.
Internal rotation
Rotation of a joint toward the middle of the body.
External rotation
Rotation of a joint away from the middle of the body.
Horizontal abduction
Movement of the arm or thigh in the transverse plane from an anterior position to a lateral
position.
Horizontal adduction
Movement of the arm or thigh in the transverse plane from a lateral position to an anterior one.
Scapular retraction
Adduction of the scapulae; shoulder blades move toward the midline.