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Clinical Test 2
Clinical Kines
24
Anatomy
Graduate
10/31/2009

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Cards

Term
Vector
Definition
quantity describes both magnitude and direction.
Term
Linear force
Definition
Results when two or more forces are acting along the same line
Term
Parallel forces
Definition
occur in the same plane and in the same or opposite direction
Term
Concurrent forces
Definition
two or more forces must act from a common point but pull in different directions
Term
Force Couple
Definition
occurs when two forces act in an equal but opposite direction resulting in a turning effect
Term
Torque
Definition
also known as moment of force, the ability of force to produce rotation about an axis.
Term
Stabilizing force
Definition
nearly all of the force generated by the muscle is directed back into the joint, pulling the two bones together
Term
Angular Force
Definition
most of the force generated by the muscle is directed at rotating the joint and not stabilizing the joint
Term
Dislocating force
Definition
Force is directed away from the joint
Term
state of equilibrium
Definition
When an object is balanced, all torques acting on it are even
Term
Gravity
Definition
mutual attraction between the earth and an object
Term
Gravitational Force
Definition
always directed vertically downward toward the center of the earth.
Term
Center of Gravity
Definition
is the balance point of an object at which torque on all sides is equal.
Term
Line of Gravity
Definition
imaginary vertical line passing through the COG toward the earth.
Term
Base of Support
Definition
the part of the body that is in contact with the supporting surface.
Term
Stable equilibrium
Definition
occurs when an object is in a position that to disturb it would require the COG to be raised.
Term
Lever
Definition
is a rigid bar that can rotate about a fixed point when a force is applied to overcome resistance
Term
Axis
Definition
fixed point about which the lever rotates
Term
Force
Definition
causes the lever to move, usually, but not always muscular
Term
Resistance
Definition
must be overcome for motion to occur, can include the weight of the part being moved, gravity or external weight
Term
Force arm
Definition
is the perpendicular distance, or length between the line of force and the axis.
Term
Resistance arm
Definition
the perpendicular distance or length between the line of resistance and the axis.
Term
Mechanical Advantage
Definition
the ratio between the force arm and the resistance arm.
Term
Pulley
Definition
consists of a grooved wheel that turns on an axle with a rope or cable riding in the groove.
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