Musculoskeletal System Flashcards
1
Q
How many lever systems are there?
A
3
2
Q
Definition of lever
A
A rigid bar that turns about an axis to create movement.
3
Q
What do all levers contain?
A
Fulcrum Load and effort
4
Q
Deffinition of Fulcrum
A
A fixed point at which a lever turns or is supported
5
Q
Definition of Load
A
Weight or resistance that the lever must move
6
Q
Definition of Effort
A
A force required to move the load (usually applied by our muscles)
7
Q
First-class lever
A
Fulcrum is between the load and the effort.
8
Q
Second-class lever
A
The load is between the fulcrum and the effort.
9
Q
Third-class lever
A
Effort is between the fulcrum and the load.
