Biomechanical Principles Flashcards
1
Q
Degrees of freedom
A
number of axis of rotation x2
2
Q
1st Class lever
A
Fulcrum is between effort and load (powerful)
3
Q
Fulcrum
A
pivot point
4
Q
Effort
A
applied force
5
Q
Load
A
Resistance
6
Q
2nd class lever
A
load is between fulcrum and effort (powerful)
7
Q
3rd class lever
A
Effort is between fulcrum and load (speed + most common in the human body)
8
Q
Isometric contraction
A
Pull equals resistance
9
Q
Eccentric contraction
A
Pull is less than resistance
10
Q
Concentric contraction
A
Pull exceeds resistance
11
Q
Tone
A
Continuous, low level contraction
12
Q
Passive influence
A
Muscles influence via elasticity without contracting
13
Q
Active influence
A
Contractions and tone
14
Q
Reflexive activity
A
Sensory stimulation directly influences contraction level
15
Q
Voluntary muscle
A
the ability to turn muscles “on” and “off”
