Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
OTA 130-Movement
Assessment Skills - Factors Influencing Movement
| Question | Answer |
|---|---|
| Lack of barriers that prevent user from accessing the service, product or information | Accessibility |
| Ability of user to access features of environment and use environment for its intended purpose | Negotiability |
| Design of products and environment to be usable by all people w/o adaptation | Universal Design |
| Only ___ can actively generate internal forces | Muscles |
| Passive internal forces generated by... | Tension in tendons, connective tissue, ligaments, joint capsules |
| Examples of external forces | Resistance of air or water, direct contact via normal reaction (Newton's 3rd Law), friction, gravity |
| Force that results from resistance b/n surfaces of two objects from moving upon one another | Friction |
| Three kinds of friction | Static, kinetic, rolling |
| Point around which body's mass is evenly distributed | Center of gravity (COG) |
| Two terms r/t quantitative/magnitude of motion | Rotary motion and translatory/linear motion |
| Measured in degrees around axis | Rotary motion (aka angular motion) |
| Measured in linear distance through which object has traveled | Linear motion |
| Actual distance object is displaced from original point of reference | Displacement |
| Actual sum of length of measurement traveled | Distance |
| Object rotates around axis while axis being translated through space by motion of adjacent segment | General plane movement |
| Muscle or tendon goes around bony prominence and changes the movement result or angle of pull | Anatomic pulley |
| Characteristics of force | Magnitude, direction, point of application |
| Pushing both sides of joint towards center; orrcurs naturally (walking) and intentionally (UE weightbearing) | Joint compression |
| Pulling the two joint surfaces apart; occurs naturally (carrying heavy bag) and intentionally (hanging from bar) | Joint distraction (traction) |
| Forces occur parallel to joint surface | Shear |
| Ability to control equilibrium; when center of gravity falls within base of support | Balance |
| State of zero acceleration where no change in speed or direction of body | Equilibrium |
| Resistance to change in body's acceleration and/or disturbance of body's equilibrium; enhanced by determining body's COG and appropriately changing it. | Stability |
| Point at which all body's mass and weight are equally balanced or equally distributed in all directions | Center of gravity |
| Avg center of gravity for human | Anterior to 2nd sacral vertebrae below belly button |
| Affects of balance | Size of base, relation of line of gravity to base, weight (mass) of body, and relation of height to center of gravity |
| How is stability increased? | Enlarging size of base of support in direction of anticipating force |
| Balance is aided by... | Rotation on axis (ex: bicycle) |
| Three of Newton's Laws (mechanics) | Law of inertia, acceleration (motion), action-reaction (force parts) |
| Law of Inertia | Body in motion tends to remain in motion at same speed in straight line unless acted on by force; body at rest tends to remain at rest unless acted on by force |
| Law of Acceleration | Acceleration of object is proportional to unbalanced forces acting upon it and inversely proportional to mass of body |
| Law of Reaction | For every action there is an opposite and equal reaction |
| Law of Reaction (more) | When force acts on object and object remains stationary, there is an equal force acting on the object in opposite direction. |
| Mechanical advantage | Load divided by effort |
| Lever | Rigid bar that turns around axis of rotation, as result of force being applied against resistance; has 3 components: axis, force, resistance) |
| First class lever | FAR; arms generally = |
| 2nd class lever | ARF; force arm usually longer than resistance arm |
| 3rd class lever | AFR; resistance arm usually longer than force arm |
Created by:
jxlab2aa
Popular Occupational Therapy sets