lever systems Flashcards
1
Q
what do levers systems do
A
help body to move
2
Q
how many levers systems are there
A
first second and third
3
Q
what is the first class lever
A
load and effort are at opposite ends and fulcrum is in middle
4
Q
when are first class levers used
A
elbow extension
5
Q
second class levers
A
fulcrum and effort are at opposite ends and load is in the middle
6
Q
when are second class levers used
A
plantar flexion and dorsiflexion
7
Q
what shape is the effort
A
arrow
8
Q
what shape is the fulcrum
A
traingle
9
Q
what shape is the load
A
a square
10
Q
third class lever
A
fulcrum and load are at opposite ends then effort in middle
11
Q
when are third class levers used
A
elbow extension
12
Q
first
A
EFL
13
Q
second
A
FLE
14
Q
third
A
LEF
