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Final Exam - INteractions of Skeletal Muscles
N/A
24
Anatomy
Undergraduate 3
12/10/2012

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Term
How do skeletal muscles work?
Definition
Together, or in opposition.
Term
Do muscles pull or push or both?
Definition
PULL. NEVER PUSH.
Term
The insertions moves _____ the origin.
Definition
Towards.
Term
Whatever one muscle group does, another muscle group _______.
Definition
UNDOES.
Term
What are Prime Movers?
Definition
provide the major force for producing a specific movement.
Term
What are Antagonists?
Definition
oppose or reverse a particular movement.
Term
What are synergists?
Definition
Add force to movement or reduce undesirable movement.
Term
What are fixators?
Definition
Synergists that immobilize a bone/muscles origin.
Term
What are the four things just listed?
Definition
Functional groups of muscle classification.
Term
How are muscles named?
Definition
1.)location
2.)shape
3.)relative size
4.)direction of fibers
5.)number of origins
6.)location of attachments
7.)action
Term
How do parallel fascicles run?
Definition
Parallel to the long axis of the muscle.
Term
What are fusiform fascicles?
Definition
Spindle-shaped muscles
Term
What are pennate fascicles?
Definition
Short, attach obliquely to a central tendon running the length of the muscle.
Term
What are convergent fascicles?
Definition
Converge from a broad origin to a single tendon insertion.
Term
What are circular fascicles?
Definition
Arranged in concentric rings.
Term
A rigid bar that moves on a fulcrum, or a fixed point is a...
Definition
Lever.
Term
the force applied to the level is the...
Definition
Effort.
Term
The resistance moved by the effort is the...
Definition
Load.
Term
What is mechanical advantage?
Definition
The load is close to the fulcrum, effort is far from fulcrum which means a small effort is required to move load.
Term
What is mechanical disadvantage?
Definition
Speed lever: rapid contraction and wide range of motion which means greater effort required.
Term
What are the three classes of lever systems?
Definition
First - Axis and Atlas
second - Bones of feet
third - bicep curl
Term
The ____ is between the load and the effort.
Definition
Fulcrum. First Class.
Term
The ____ is between the fulcrum and the effor.
Definition
Load. Second.
Term
The ____ is applied between the fulcrum and the load.
Definition
Effort. Third Class.
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