Biomechanics and Kinesiology Flashcards
7 cards from real Occupational Therapist Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Biomechanics and Kinesiology flashcards as text
Which plane of motion divides the body into anterior and posterior halves?
Answer: Frontal (coronal) plane
The frontal (coronal) plane divides the body into anterior and posterior halves; abduction and adduction movements occur in this plane.
Which type of joint allows the greatest range of motion across multiple planes of movement?
Answer: Ball-and-socket joint
Ball-and-socket joints, such as the hip and glenohumeral joint, permit multiplanar movement including flexion, extension, abduction, adduction, and rotation.
Which type of muscle contraction occurs when the muscle generates force while simultaneously lengthening?
Answer: Eccentric contraction
Eccentric contraction involves muscle force production while the muscle lengthens, as seen when lowering a weight under control.
The 'power grip' in hand function is best described as:
Answer: Palmar prehension using all digits and the palm to hold an object
Power grip involves wrapping the fingers and palm around an object with the thumb providing counter-pressure, maximizing grip force for cylindrical or spherical objects.
Normal shoulder flexion range of motion in a healthy adult is approximately:
Answer: 180 degrees
Normal shoulder flexion is 0–180 degrees, representing the full arc from anatomical position to full overhead elevation.
In a Class I lever system, the fulcrum is positioned:
Answer: Between the effort and the resistance
In a Class I lever, the fulcrum is located between the effort force and the resistance, as seen in a seesaw or the head balanced on the atlanto-occipital joint.
The 'close-packed position' of a synovial joint is defined as the position of:
Answer: Maximum congruence, ligamentous tension, and minimal joint play
The close-packed position provides maximum joint surface contact, ligamentous tautness, and minimal accessory motion, making the joint most stable and least susceptible to distraction.
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