mg - levers Flashcards
1
Q
What is the fulcrum?
A
the joint involved in the movement
2
Q
what is the resistance?
A
the load that is being moved. Normally the part of the body against gravity
3
Q
effort is the…
A
muscle contraction
4
Q
How many components does a lever have?
A
three
5
Q
what are the levers three components
A
fulcrum/pivot= the point at which the lever rotates resistance/load= the force applied by the lever system effort= the force applied by the user of the lever system
6
Q
First class lever
A
The fulcrum lies between the effort and the resistance
extension at the elbow or the head moving backwards or forwards
7
Q
second class lever
A
The fulcrum is at one end, the effort is at the other end and the resistance is in-between.
only found in the foot
8
Q
third class lever
A
The fulcrum is at one end, the resistance at the other and the effort lies between the load and the fulcrum.
is any other movement not in the foot, head or elbow
