*
This is your Finals test for Course 121 - to be
taken after you have registered
and processed tuition.
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True
| False
1.
A
1st class lever system is characterized as being
inherently stable
because its true resistance arm is aligned 180°
with it’s true effort arm.
2.
2.
A 3rd class lever system is characterized as
being inherently unstable
because its true resistance arm does not align
with it’s true effort arm.
3.
The
spinal posture that best characterizes the infant
and elderly and their
inability to demonstrate agile locomotion is
the C-shape posture.
4.
If
the cartilage lining the articular surface of
a joint like the hip socket is wearing out
you should be concerned that compressive forces
might be a cause.
5.
If
a ligament like the anterior cruciate in the
knee is being continually strained
you would be concerned that movements creating
shear forces were the problem.
6.
In
human movement the force of resistance and the
force of effort
add up to create the stabilizing force.
7.
The
ability to rise up supinely against the force
of gravity using 1st class levers in the spine
characterizes a unique physical ability of the
adapted S-shape posture.
8.
Typically,
human mechanisms of shear stabilization in the
spinal column
are complex and need to be protected.
9.
It
is the position of the fulcrum relative to the
position of the application of force and resistance
that determines if a lever system is 1st or
3rd class.
10.
The
total amount of effort to produce successful
movement includes not only the initial force
of effort,
but also any forces required for stabilization
of the movement.
11.
The
total effort required to successfully stabilize
a movement like the sit up would typically
be greater in a spinal column employing 3rd
class levers rather than 1st class levers.
12.
Descriptive
words like “uncoordinated”, “stiff”, “weak”
and “fatigued” when used to describe a runner
could typically depict an individual with improper
spinal posture
requiring 3rd class lever systems at the hip
and knee.
13.
Developing
the proper upright adult S-shape posture should
best be looked at
as an 18 year long training and treatment program.
14.
A. Shear forces
B. Compressive forces
C. Instability
D. Stability
A. and C.
When performing the human sit up movement,
3rd class lever systems used by improper spinal
posture
are characterized by ?
15.
A.
Shear forces
B.
Compressive forces
C.
Instability
D. Stability
B. and D.
When performing the human sit up movement,
1st class lever systems used by proper spinal
posture
are characterized by?
Last
Modified :
01/04/11
All concepts and diagrams, unless noted otherwise,
of human spinal development in gravitational
environment are under copyright registration
to John S. Scherger, D.C.. This information
may be shared with others for personal use,
however no document may be republished in any
form or embedded
in public databases without the permission of
Dr. Scherger.
True
| False