LAB 7 –
POST-L
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– THE MUS
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SCULAR S
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LAB 7 – THE MUSCULAR SYSTEM
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P a g e
True/False Questions
1. Once a motor neuron has fired, all the muscle fibers in a muscle contract.
2. The thin filaments (actin) contain a polypeptide subunit G actin that bears active sites for
myosin attachment.
3. Movements of the thigh are accomplished by muscles anchored to the pelvic girdle.
4. The force of muscle contraction is controlled by multiple motor unit recruitment.
5. The biceps brachii inserts on the radius.
6. A contraction in which the muscle does not shorten but its tension increases is called
isometric.
7. The broadest muscle of the back is the latissimus dorsi.

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- Spring '08
- OBRIEN/SWANSON
- athletics department, Archery Team
-
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