Flashcards in Basic Concepts 1 Deck (49)
What is kinesiology?
Study of human movement
What is kinematics?
Description of motion without regard for the forces producing the motion
What is kinetics?
Analysis of the forces that produce motion
What are the two types of motion?
What are the two types of translatory motions?
Curvilinear- curved line
What is osteokinematic?
Direction of motion
What are the six different types of osteokinematic motion?
What are the three directions of motion at the midline or spine?
Flexion/extension or forward/backward bending
Lateral flexion right or left
Rotation right or left
What plane and axis are flexion and extension?
What plane and axis are abduction and adduction?
What plane and axis are rotation movements?
What is degrees of freedom?
Number of independent movements allowed at a joint.
How many DOF at the shoulder, wrist, and elbow?
How is the magnitude of motion for osteokinematics measured for single series or maximum joint angle?
How is the magnitude of motion for osteokinematics measured for angular velocity?
Degrees per second
What are musculoskeletal levers?
Parallel force systems
What is the axis in musculoskeletal levers?
Point where rotation occurs
What is the effort arm in musculoskeletal levers?
Distance between the axis and the point where the effort is applied or where the muscle attaches to the body
What is the resistance arm of a musculoskeletal lever?
Distance between the axis and the point where resistance is applied
What is a first class lever?
The axis always sits between the EA and RA
What are two examples of a first class lever?
Skull on neck
What is a second class lever?
RA is closer to the axis than EA but on the same side
What are examples of a second class lever?
Ankle plantarflexion with the met head as the COR
What is a third class lever?
EA is closer to the axis than RA but on the same side
What are examples of a third class lever?
What is mechanical advantage?
The efficacy of the lever system
What two levers have the best mechanical advantage?
First and second class levers
What is sacrificed in a third class lever?
What is gained from a third class lever?
Maximum angular displacement